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Computer Full-Form started from H

Computer Full-Form started from H

Full Form Of HDD is

(HDD) Hard Disk Drive

More About HDD:
–> A hard disk drive (sometimes abbreviated as a hard drive, HD, or HDD) is a non-volatile data storage device. It is usually installed internally in a computer, attached directly to the disk controller of the computer’s motherboard. It contains one or more platters, housed inside of an air-sealed casing. Data is written to the platters using a magnetic head, which moves rapidly over them as they spin.

–> Internal hard disks reside in a drive bay, connected to the motherboard using an ATA, SCSI, or SATA cable. They are powered by a connection to the computer’s PSU (power supply unit).

–> Examples of data that may be stored on a computer’s hard drive include the operating system, installed software, and the user’s personal files.

Why does a computer need a hard drive?
–> A computer requires an operating system to allow users to interact with and use it. The operating system interprets keyboard and mouse movements and allows for the use of software, like an Internet browser, word processor, and video games. To install a computer operating system, a hard drive (or another storage device) is required. The storage device provides the storage medium where the operating system is installed and stored.

–> A hard drive is also required for the installation of any programs or other files you want to keep on your computer. When downloading files to your computer, they are permanently stored on your hard drive or another storage medium until they are moved or uninstalled.

Can a computer work without a hard drive?
–> Without a hard drive, a computer can turn on and POST. Depending on how the BIOS is configured, other bootable devices in the boot sequence are also checked for the necessary boot files. For example, if the USB device is listed in your BIOS boot sequence, you can boot from a bootable USB flash drive in a computer without a hard drive.

–> Examples of bootable flash drives include a Microsoft Windows installation disk, GParted Live, Ubuntu Live, or UBCD. Some computers also support booting over a network with a PXE (preboot execution environment).

Hard drives in modern computers
–> Modern computers often use an SSD (solid-state drive) as the primary storage device, instead of an HDD. HDDs are slower than SSDs when reading and writing data, but offer greater storage capacity for the price.

–> Although an HDD may still be used as a computer’s primary storage, it has become more common for it to be installed as a secondary disk drive. For example, the primary SSD may contain the operating system and installed software, and a secondary HDD may be used to store documents, downloads, and audio or video files.


Full Form Of HP is

(HP) Hewlett-Packard

More About HP:
–> HP stands for Hewlett-Packard. It is an American multinational IT company that provides hardware and software related products and services. It is headquartered in Palo Alto, California, USA. Its logo is lowercase “hp” in italic letters inside a circle. As of 2015, Meg Whitman is the CEO of Hewlett-Packard.

–> HP was founded in 1939 by William Hewlett and Dave Packard. They started this company in a garage in Palo Alto, California. Their first product was an audio oscillator. Since then, the company kept growing and became world’s second largest PC vendor in 2013.

–> In 2014, HP planned to separate into two new companies; HP Inc. and Hewlett Packard Enterprise (HPE). HP Inc. which is popular as HP and stylized as hp, was established to focus on personal computers and printing business, and HPE for the enterprise technology, networking, storage, security and corporate services.

–> Today, HP Inc. (HP) is manufacturing and developing a wide range of products such as computer systems, printers, scanners and storage devices.

HP Key Milestones
Some of the key milestones of HP are as follows;

* It became a public organization in 1957.

* In 1959, HP established a marketing organization in Geneva and a manufacturing plant in Germany.

* In 1961, it was listed on the New York Stock Exchange.

* In 1962, it entered the Fortune 500 list.

* In 1963, it entered the Asian market.

* In 1964, William Hewlett was elected as the President of HP and Dave Packard was elected as the CEO and Chairman of the Board.

* In 1966, HP introduced its first computer, the HP 2116A.

* In 1972, HP introduced the first scientific calculator, the HP-35.

* In 1980, HP introduced its first personal computer, the HP-85.

* In 1983, HP introduced touchscreen PC.

* In 1984, HP introduced its LaserJet Printer line.

* In 1993, HP introduced Omnibook 300.

* In 2000, HP introduced Superdome, UNIX server for e-commerce customers.

* In 2011, HP introduced the wireless mouse.


Full Form Of HTML is

(HTML) Hyper Text Markup Language

More About HTML:
–> HTML stands for hyper text markup language. It is a hyper text markup language used to create web pages. It is written in the form of HTML elements. Hyperlink refers to a series of connections in a page to other pages. Markup language means tags are used to define the page layout and elements within the page. Its main focus is on how to display information on web pages, i.e. the webpages we see on the internet are written using HTML code. HTML documents are interpreted and displayed by web browsers. Some famous web browsers are: Google Chrome, Mozilla Firefox, Opera, Safari, Internet Explorer etc.

–> HTML was developed by Tim Berners-Lee in late 1990s. It was initially release in 1993. Till then, many HTML versions have been released. Current HTML5 version is gaining popularity due to its several extensive features. Some of which are as follows:
Video: The video element allows the users to stream video from a website.

Figure: The figure element helps display visual content such as photos, illustrations, diagrams etc.

Section: The section elements, such as divs, help organize webpage content into thematic groups.

NAV: It is used for that part of a website which is linked to other pages of the website.

Header: It allows to group together introductory elements on a website like logo, navigation items, search form etc.

Footer: It is located at the bottom of a webpage. It generally contains copyright information, links to social media and navigation items.


Full Form Of HTTP is

(HTTP) Hyper Text Transfer protocol

More About HTTP:
–> Hypertext Transfer Protocol is an application protocol used for data communication. It is the base of data communication in World Wide Web. It provides a standard for web browsers that facilitates users to exchange information over internet. HTTP is used by most of the websites to access any file or page. HTTP is a request-response protocol in the client server computing model. It is an application layer protocol designed within the framework of Internet Protocol Suite.

What is hypertext
–> A text containing a link within it, is known as hypertext. If you click on a word on a webpage and it redirect you on a new page, it means you have clicked on a hypertext.

How HTTP works
–> When you enter a URL in your web browser to access any particular file or page, the protocol fetches information from the server and responds back that requested web page to the client. You need to write HTTP before the address of the page.

For example: If you want to access any website like www.example.com then you write: http://www.example.com


Full Form Of HAL is

(HAL) Hardware Abstraction Layer

More About HAL:
–> A hardware abstraction layer (HAL) is a logical division of code that serves as an abstraction layer between a computer’s physical hardware and its software. It provides a device driver interface allowing a program to communicate with the hardware.

–> The main purpose of a HAL is to conceal different hardware architectures from the OS by providing a uniform interface to the system peripherals.

–> A hardware abstraction layer is included in many OSs to avoid modifying the OS kernel to run the program on computers with varying hardware architecture. A PC may include the HAL in the OS kernel or in the form of device drivers that provide a consistent interface for applications to interact with the hardware peripherals.

The HAL provides the following benefits:
* Allowing applications to extract as much performance out of the hardware devices as possible.

* Enabling the OS to perform regardless of the hardware architecture.

* Enabling device drivers to provide direct access to each hardware device, which allows programs to be device-independent.

* Allowing software programs to communicate with the hardware devices at a general level.

* Facilitating portability.

–> Some of the OSs that feature HALs include the Mac OS, Linux, DOS, Solaris, BSD, Windows NT, Windows 2000 and IBM’s AS/400.


Full Form Of HCL is

(HCL) Hindustan Computers Limited

More About HCL:
–> HCL stands for Hindustan Computers Limited. It is an Indian multinational information technology (IT) service and consulting company headquartered in Noida, India. It was founded in 1976 as one of the original IT start-ups in India. It is a pioneer of modern computing with many inventions including the introductions of the 8-bit microprocessor-based computer in 1978.

–> HCL has more than 131000 employees from 140 nationalities operating across 44 countries, including over 500 branches in India. The enterprise generates annual revenues of more than US$ 8.3 billion.

–> Today, HCL enterprise is offering services in different sectors, which include technology, healthcare, and talent management solutions. Accordingly, it comprises three companies – HCL Infosystems, HCL Technologies, and HCL Healthcare.

HCL Technologies:
–> HCL Technologies is a global technology company that helps organizations prepare their businesses for the digital age. Its technology products and services based on four decades of innovation, and it has an influential culture of invention and focuses on customer relationships.

Key Services: The key services of HCL Infosystems include Infrastructure Services, Application Services, Engineering, and R&D Services, Business Services, Cyber Security & GRC Services, Cloud Services, Digital & Analytics, DRYiCE, and IoT WoRKS.

HCL Infosystems:
–> HCL Infosystems Ltd. is a reputed Distribution, IT Solutions, and Services Company that enables enterprises to attain and sustain competitive advantage through Information and Communication Technologies. It offers value-added distribution of technology, flexibility, and consumer products to IT & System Integration services.

Key Services: Distribution, IT Solutions and Enterprise Services

HCL Healthcare:
–> HCL Healthcare, which is a delivery arm of HCL Groups, is a network of multi-specialty clinics mainly focused on corporate health. Its main offerings include Preventive Health Solutions, Managed Care Plans, Dentistry solutions, and Wellness & Wellbeing programs that aims to provide the care and treatment for chronic and acute diseases.

Key Services: General Practice & Internal Medicine, Gynaecology & Paediatrics, Gynaecology & Paediatrics, Orthopaedics & Physiotherapy, Dermatology & Dental, Health Checkup

Brief History of HCL:

* HCL Infosystems was formed in 1976 when eight entrepreneurs believed that a microprocessor could change the world and left their corporate jobs to work together.

* In 1978, HCL designed and introduced India’s first 8C microcomputer.

* In 1980, HCL launched a 16-bit processor based microcomputer.

* In 1983, HCL indigenously developed RDBMS networking OS and client-server architecture.

* In 1988, HCL developed a fine-grained multiprocessor UNIX.

* In 1990, HCL Comnet, which is the Infrastructure Services Division, was launched, and it went on to pioneer Remote Infrastructure Management.

* In 2001, HCL set up the first-ever Indian BPO Global Delivery Centre in Northern Ireland for British Telecom.

* In 2005, HCL entered into a JV with Deutsch Bank and created the Flight Management Systems for Boeing 747s.

* In 2008, HCL was recognized as the leader in Data Centre and Workplace IT services.

* In 2014, HCL Healthcare was formed.

(HCL) Hindustan Computers Limited

More About HCL:

–> HCL stands for Hindustan Computers Limited. It is an Indian multinational information technology (IT) service and consulting company headquartered in Noida, India. It was founded in 1976 as one of the original IT start-ups in India. It is a pioneer of modern computing with many inventions including the introductions of the 8-bit microprocessor-based computer in 1978.

–> HCL has more than 131000 employees from 140 nationalities operating across 44 countries, including over 500 branches in India. The enterprise generates annual revenues of more than US$ 8.3 billion.

–> Today, HCL enterprise is offering services in different sectors, which include technology, healthcare, and talent management solutions. Accordingly, it comprises three companies – HCL Infosystems, HCL Technologies, and HCL Healthcare.

HCL Technologies:

–> HCL Technologies is a global technology company that helps organizations prepare their businesses for the digital age. Its technology products and services based on four decades of innovation, and it has an influential culture of invention and focuses on customer relationships.

Key Services: The key services of HCL Infosystems include Infrastructure Services, Application Services, Engineering, and R&D Services, Business Services, Cyber Security & GRC Services, Cloud Services, Digital & Analytics, DRYiCE, and IoT WoRKS.

HCL Infosystems:

–> HCL Infosystems Ltd. is a reputed Distribution, IT Solutions, and Services Company that enables enterprises to attain and sustain competitive advantage through Information and Communication Technologies. It offers value-added distribution of technology, flexibility, and consumer products to IT & System Integration services.

Key Services: Distribution, IT Solutions and Enterprise Services

HCL Healthcare:

–> HCL Healthcare, which is a delivery arm of HCL Groups, is a network of multi-specialty clinics mainly focused on corporate health. Its main offerings include Preventive Health Solutions, Managed Care Plans, Dentistry solutions, and Wellness & Wellbeing programs that aims to provide the care and treatment for chronic and acute diseases.

Key Services: General Practice & Internal Medicine, Gynaecology & Paediatrics, Gynaecology & Paediatrics, Orthopaedics & Physiotherapy, Dermatology & Dental, Health Checkup

Brief History of HCL:

* HCL Infosystems was formed in 1976 when eight entrepreneurs believed that a microprocessor could change the world and left their corporate jobs to work together.

* In 1978, HCL designed and introduced India’s first 8C microcomputer.

* In 1980, HCL launched a 16-bit processor based microcomputer.

* In 1983, HCL indigenously developed RDBMS networking OS and client-server architecture.

* In 1988, HCL developed a fine-grained multiprocessor UNIX.

* In 1990, HCL Comnet, which is the Infrastructure Services Division, was launched, and it went on to pioneer Remote Infrastructure Management.

* In 2001, HCL set up the first-ever Indian BPO Global Delivery Centre in Northern Ireland for British Telecom.

* In 2005, HCL entered into a JV with Deutsch Bank and created the Flight Management Systems for Boeing 747s.

* In 2008, HCL was recognized as the leader in Data Centre and Workplace IT services.

Full Form Of HCL is

(HCL) Hindustan Computers Limited

More About HCL:
–> HCL stands for Hindustan Computers Limited. It is an Indian multinational information technology (IT) service and consulting company headquartered in Noida, India. It was founded in 1976 as one of the original IT start-ups in India. It is a pioneer of modern computing with many inventions including the introductions of the 8-bit microprocessor-based computer in 1978.

–> HCL has more than 131000 employees from 140 nationalities operating across 44 countries, including over 500 branches in India. The enterprise generates annual revenues of more than US$ 8.3 billion.

–> Today, HCL enterprise is offering services in different sectors, which include technology, healthcare, and talent management solutions. Accordingly, it comprises three companies – HCL Infosystems, HCL Technologies, and HCL Healthcare.

HCL Technologies:
–> HCL Technologies is a global technology company that helps organizations prepare their businesses for the digital age. Its technology products and services based on four decades of innovation, and it has an influential culture of invention and focuses on customer relationships.

Key Services: The key services of HCL Infosystems include Infrastructure Services, Application Services, Engineering, and R&D Services, Business Services, Cyber Security & GRC Services, Cloud Services, Digital & Analytics, DRYiCE, and IoT WoRKS.

HCL Infosystems:
–> HCL Infosystems Ltd. is a reputed Distribution, IT Solutions, and Services Company that enables enterprises to attain and sustain competitive advantage through Information and Communication Technologies. It offers value-added distribution of technology, flexibility, and consumer products to IT & System Integration services.

Key Services: Distribution, IT Solutions and Enterprise Services

HCL Healthcare:
–> HCL Healthcare, which is a delivery arm of HCL Groups, is a network of multi-specialty clinics mainly focused on corporate health. Its main offerings include Preventive Health Solutions, Managed Care Plans, Dentistry solutions, and Wellness & Wellbeing programs that aims to provide the care and treatment for chronic and acute diseases.

Key Services: General Practice & Internal Medicine, Gynaecology & Paediatrics, Gynaecology & Paediatrics, Orthopaedics & Physiotherapy, Dermatology & Dental, Health Checkup

Brief History of HCL:

* HCL Infosystems was formed in 1976 when eight entrepreneurs believed that a microprocessor could change the world and left their corporate jobs to work together.

* In 1978, HCL designed and introduced India’s first 8C microcomputer.

* In 1980, HCL launched a 16-bit processor based microcomputer.

* In 1983, HCL indigenously developed RDBMS networking OS and client-server architecture.

* In 1988, HCL developed a fine-grained multiprocessor UNIX.

* In 1990, HCL Comnet, which is the Infrastructure Services Division, was launched, and it went on to pioneer Remote Infrastructure Management.

* In 2001, HCL set up the first-ever Indian BPO Global Delivery Centre in Northern Ireland for British Telecom.

* In 2005, HCL entered into a JV with Deutsch Bank and created the Flight Management Systems for Boeing 747s.

* In 2008, HCL was recognized as the leader in Data Centre and Workplace IT services.

* In 2014, HCL Healthcare was formed.

* In 2014, HCL Healthcare was formed.


Full Form Of HCL is

(HCL) Hardware Compatibility List

More About HCL:
–> Short for hardware compatibility list, HCL is a listing of hardware that is compatible with Microsoft Windows operating systems, such as Windows NT.

–> Microsoft also refers to the HCL as the Windows Certified Products List. More information on how to search for hardware in the HCL is available on the Windows certified products list page.

Note:
Microsoft only maintains an HCL for versions of Windows that are currently supported.

–> Developers wanting to have their hardware added to the HCL need to follow the testing and submission process in Microsoft’s Windows hardware compatibility program.


Full Form Of HDMi is

(HDMi) High Definition Multimedia Interface

More About HDMi:
–> HDMI stands for High Definition Multimedia Interface. It is an all digital audio-video interface which transmits signals in uncompressed format, e.g. uncompressed video data and compressed or uncompressed digital data from a HDMI-compliant source device to a computer monitor, video projector, digital television etc. It is the digital replacement for analog video and audio standards which were widely used for many decades in the past. The production of consumer HDMI began in the late 2003. Since then, several versions of HDMI have been developed and released; all comes with cable and connector.

Types of HDMI Cable
Standard Cable: It is also called Category 1 HDMI cable. It works at pixel speeds of 75 Mhz supporting bandwidth of around 2.23 Gbps. It is suitable for transmitting an uncompressed 1080i signal.

High Speed Cable: It is also called Category 2 HDMI cable. It works at pixel speeds of 340 MHz supporting bandwidth of around 10.2 Gbps. It is suitable for the latest 1440p and WQXGA resolutions.

Advantages

* It carries both the video and audio signals; you don’t need separate audio cables.

* It allows you establish many connections using few cables that simplify the connection process and eliminate the clutter of multiple cables.

* It allows you to turn your TV into a computer monitor as latest computers and laptops come with HDMI connection.

* It can be converted to DVI using a special adapter that offers more connection options.

* It supports various audio formats such as standard stereo, multi-channel surround sound etc.

* It has the capacity to support high definition video formats (720p, 1080i etc). It can also support enhanced definition formats such as 480p as well as standard definition formats like PAL or NTSC.


Full Form Of HPFS is

(HPFS) High Performance File System

More About HPFS:
–> The high-performance file system (HPFS) is a file system designed especially for the IBM OS/2. It is known for handling large files of up to 2 GB across multiple hard disks, as well as for handling long file names of up to 256 bytes. HPFS was designed to improve on the weaknesses of the file allocation table file system.

–> HPFS avoided several MS DOS limitations, especially the eight-character computer file name restriction. The program runs on the same machine as the MS-DOS file system and file allocation table, or may run independently.

The advantages of HPFS include:
* Contiguous storage

* Separate date stamps for file creation and last access and modification

* Less file fragmentation

* Smaller cluster size

* Support for storage devices of up to 512 GB

* Faster disk operation and file access of the root directory at the midpoint of the disk rather than the beginning

The advantages of HPFS include:
* Requires more system memory

* Requires disk partitions not recognized by MS-DOS, which prevents a computer from booting from a floppy disk

* Requires a special utility (Partition Magic from PowerQuest) to access the HPFS partition

* IBM agreed to collaborate with Microsoft so that both have rights to Windows and OS/2 technology. However, Microsoft still retains the rights to OS/2 technology and HPFS.


Full Form Of HTTPS is

(HTTPS) Hypertext Transfer Protocol Over Secure Sockets Layer

More About HTTPS:
–> Stands for “HyperText Transport Protocol Secure.” HTTPS is the same thing as HTTP, but uses a secure socket layer (SSL) for security purposes. Some examples of sites that use HTTPS include banking and investment websites, e-commerce websites, and most websites that require you to log in.

–> Websites that use the standard HTTP protocol transmit and receive data in an unsecured manner. This means it is possible for someone to eavesdrop on the data being transferred between the user and the Web server. While this is highly unlikely, it is not a comforting thought that someone might be capturing your credit card number or other personal information that you enter on a website. Therefore, secure websites use the HTTPS protocol to encrypt the data being sent back and forth with SSL encryption. If someone were to capture the data being transferred via HTTPS, it would be unrecognizable.

–> You can tell if a website is secure by viewing the URL in the address field of your Web browser. If the Web address starts with https://, you know you are accessing a secure website. Most browsers will also display a lock icon somewhere along the edge of the window to indicate the website you are currently visiting is secure. You can click the lock icon to view the secure certificate that authenticates the website.

–> So whenever you are asked to enter personal or financial information on a website, make sure that the URL starts with “https://” and that the lock icon appears in the window. Then you can be sure that the website is secure and any data you enter will only be recognized by your computer and the Web server.

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