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(PC) General Purpose Computers 0 + - = 9 8 7 1 2 3 4 5 6 c Hardware Computer hardware basically refers to the physical aspects of the computer; the computer parts that are connected to the computer and can be touched. Software General Purpose Computers Input device: piece of computer equipment and is used to provide data and control signals to an information processing system (eg. computer). Examples of input devices include keyboards, scanners etc. General Purpose Computers Central processing unit (CPU): It is the central processor unit, is the hardware within a computer that carries out the instructions of a computer program. Palmtop Command- line interface 'A command-line interface allows the user to interact with the computer by typing in commands. The computer displays a prompt, the user keys in the command and presses enter or return.' (bbc.co.uk) Hardware Vs. Software Hardware is physical device, something that you can touch
Software is a collection of instructions and codes installed into the computer and it can not be touched. What You Need To Know!!
By: Faatimah Graphic User Interface Examples: Monitor, mouse, key board, processor, printer, audio speakers etc. Parts also involves the cables, connectors and power supply units. A hand-operated electronic device
Controls the coordinates of a cursor on the computer screen. Is a computer screen or display.
The monitor displays the computer's open programs Mouse Monitor A printer is an output device that prints paper documents.
The two most common types of printers are ink jet and laser printers.
The printed output produced by a printer is often called a 'hard copy.' A keyboard is basically a board of keys. Along with the mouse.
The keyboard's design comes from the original typewriter keyboards.
This keyboard layout is known as the QWERTY design, which gets its name from the first six letters across the keyboard. Printer The speakers receive audio input from a device such as a computer etc. Speakers Keyboard Software is a term for organized collections of computer data and instructions,
There are two different types of software's: system and application software.
system software that provides the basic functions of the computer.
Application software which is used by users to accomplish specific tasks. System software: Microsoft Windows, HD Sector Boot Software, Assembler and Compiler Software etc.
Application software: Microsoft Word (Word Processing), Microsoft Excel (Spreadsheet software), ) VLC Media Player (Audio / Video Software etc. Examples: All computers have main/internal memory chips to store programs. There are two types, ROM and RAM. ROM (Read Only Memory) chips are the contents cannot be changed by a program or user and are not lost when the computer is switched off. They are used to store the programs used to start the hardware running. RAM (Random Access Memory) : they are chips are which are lost when the computer is switched off. When a computer is started up, the operating system (i.e. Windows Vista) is copied into the RAM. Output devices: Any device that outputs information from a computer is called an 'output device. 'Example: monitors and speakers Secondary/Backing Storage Secondary/backing storage refers to storage devices and media that are not constantly accessible by a computer system. The secondary storage devices are media that can be plugged in or inserted into the computer, so you can access the system. As secondary technology is not always connected to the computer, it is usually known for backing up data.
External hard drives, portable flash drives (USB), CD's and DVD's. External Hard Drive Flash Drive (USB) A graphic user interface (GUI) is a computer program that lets a person communicate with computers through symbols, 'visual metaphors' and pointing devices. Example:
Apple Inc.’s Macintosh and Microsoft Corporation’s Windows Example: Bibliography: Mainframe Laptop Personal Digital Assistant 'A personal computer (PC), a digital computer designed for use by only one person at a time. A typical personal computer assemblage consists of a central processing unit (CPU), two types of computer memory, main memory, (RAM), and auxiliary memory, such as magnetic hard disks and special optical compact discs, (ROM) discs (CD-ROMs and DVD-ROMs); and various input/output devices, including a display screen, keyboard and mouse, modem, and printer.' (Britannica.com) A mainframe is also known as 'the big iron' and is a very large and expensive computer. It supports hundreds or thousands of users at a a time. These computers are mostly used by corporate and governmental organizations to store large bulks of data. A laptop is a portable computer that has the same qualities as a desktop computer. The design of the laptop allows the screen to be shut closed and this makes it easier to carry around. Laptops are different then desktops because Laptops are portable. Another pro about laptop is, they can run on internal battery or an outside power adapter. and Tarek As you can tell by the name 'Palmtop' is a computer that fits into your palm. As the computer is very small, it is very limited but takes some functions from the phone book and calendars. The space is really limited so instead of a keyboard you use a pen to input information and this is often called hand-held computers. 'In a simple form 'PDA' is a hand held device that combines computing, telephone/fax, Internet and networking features. A typical PDA can function as a cellular phone, fax sender, Web browser and personal organizer.' (Webopedia) graphical user interface (GUI). (n.d.). Retrieved February 25, 2013, from
Encyclopedia Britannica website: http://www.britannica.com/EBchecked/topic/
How to buy the best laptop in the age of Windows 8. (n.d.). Retrieved January
25, 2013, from PCWorld website: http://www.pcworld.com/article/2018594/
How Does a Mainframe Computer Look Like. (2011, September 28). Retrieved
February 25, 2013, from Warepin website: http://www.warepin.com/
Laptop. (n.d.). Retrieved February 25, 2013, from Businessdictionary website:
mainframe. (n.d.). Retrieved February 25, 2013, from Webopedia website:
Palmtop. (n.d.). Retrieved February 25, 2013, from Webopedia website:
PDA. (n.d.). Retrieved February 20, 2013, from Webopedia website:
personal computer (PC). (n.d.). Retrieved February 25, 2013, from Encyclopedia
Britannica website: http://www.britannica.com/EBchecked/topic/452928/
User interfaces. (n.d.). Retrieved February 25, 2013, from BBC GCSE Bitesize
Image bibliography will be sent to Ms.Francis