Introduction to Computers
Electronic device that receives, processes, stores data and then will produce a result. It must have hardware and software working together to perform a task.
|data||Text, numbers, sounds, and graphics entered into a computer.|
The physical equipment that can be seen and touched.
|internet||The largest network used as a communication tool.|
|local area network (LAN)||A series of connected personal computers, workstations, and peripheral devices such as printers and scanners, within a confined space such as office or classroom.|
|Mainframe computer|| |
Large, powerful computers that are used for centralized storage, processing and management of large amounts of data.
Also, called a personal computer (PC), used at homes or offices by one person that can fit on top or under a desk
This computer is designed to serve several users and processes significant amount of data . It is not as large as a supercomputer but larger than a microcomputer (personal computer)
|network||Connects one computer to other computer and peripheral devices.|
|Notebook computer|| |
A small, portable computer that is similiar to a microcomputers.
Largest and fastest computers, capable of storing and processing tremendous volumes of data.
|Wide area network (WANs)||Computer networks that cover a large geographical area. Most WANs are made up of several connected LANs.|
|channel||Media such as a telephone wire, fiber-optic cable, microwave signals, that carry/transmission of the communication message.|
|people||Users who enter the data on the computers and use the output.|
|protocol||Standard format for transferring data between two devices. TCP/IP is the international for transmitting data.|
|receiver||The computer that receives the data transmission.|
|sender||The computer that sends the data transmission.|
Set of instructions that tells the computer what to do.
|computer system|| |
Hardware, software, and data working together.
|data communication||Transmission of text, numeric, voice, or video data from one machine to another.|
An integrated circuit silcon chip that contains the processing unit for a computer or computerized appliance.
|input devices||A piece of hardware that helps the computer enter data. Keyboard and mouse are this type of computer device.|
|processor||A hardware device that processes datat into useful information. It is called CPU or Central Processing Unit.|
|storage device||A hardware device that stores data. Examples are jump drives, CD, and harddrive.|
|bit||a binary digit -either zero or one (0 or 1)|
|byte||A unit of measurement of memory. The amount of space used to save one character of one value. It is equal to 8 bits.|
|gigabyte||1 billion bytes|
|megabyte||1 million bytes|
|RAM (Random Access Memory)||Main memory that stores instructions and data while the computer is on. This memory will be lost when the power is off. This memory can be changed.|
|ROM (Read Only Memory)||Main memory that is not lost when the power is off. It hold instructions for the computer that are necessary for it to work.|
|Hard Disk/Drive||Storage device that is sealed inside the computer. Data can be founded faster on the hard disk/drive than any other storage device.|
main circuit board of a computer
|Sound Card|| |
Lets a computer play and record high quality sound.
|Softcopy|| Visual information seen on your monitor.|
You cannot touch it; you can see it.
|Hardcopy||The paper copy that is produced by the printer. The paper copy can be touched.|
Flickr Creative Commons Images
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- "computer" image
- "hardware" image
- "Mainframe computer" image
- "Microcomputer" image
- "Minicomputer" image
- "Notebook computer" image
- "supercomputer" image
- "software" image
- "computer system" image
- "microprocessor" image
- "Motherboard" image
- "Sound Card" image
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