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a numbering system that only computers use
it uses only two digits: 1 and 0 |
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the smallest and most basic amount of information that can be used by a computer.
A bit can hold only a value of 1 or 0. |
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| an error in a computer's program or software |
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a flat metallic-looking disk that can store fairly large amounts of information
a laser beam is used to read from and write to it |
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a programmable, electronic device or machine that can save and read data from a storage area
can do super fast math and decision-making operations
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| the art of understanding and solving problems with computers |
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| CPU (Central Processing Unit) |
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the "heart" of the computer where the actual work (program instruction) is performed
also called a brain or microprocessor |
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a movable indicator on the screen (usually a vertical line or block sometimes blinking)
showing where text would be inserted
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| a compact disk used primarily for storing an entire movie |
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| information of any kind usable by a computer |
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a collection of information stored in a computer and designed for quick retrieval, expansion, and updating
this is application software |
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| the act of finding and correcting errors in a computer program |
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| a thin, circular disk of magnetic or optical material capable of storing information(sometimes housed in a plastic protector) |
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| a device that allows a removable disk to be inserted and read from or written to |
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| a collection of related information stored and dealt with as a single unit |
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1,024 Megabytes
1,073,741,825 bytes to be exact |
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| hard disk/hard drive/storage |
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Definition
a very large disk (size measured in gigabytes) that is permanently mounted inside a computer's case
used to store everything . . . all programs, data, settings, etc.
the info stored on a hard disk does NOT get erased when the computer is turned off |
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the tangible, actual parts of a computer system
keyboard, disk drive, printer, monitor, etc. |
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| data that is organized and entered into a computer |
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data going into the computer
data being "put in" the computer |
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a hand-held device commonly used to play games
this is an input device |
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a set of keys arranged much like that of a typewriter's keys used to enter information into the computer
this is the most commonly used input device |
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a portable computer that typically unfolds into a screen and a keyboard
it runs on a battery |
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1,024 kilobytes
1,048,576 bytes to be exact |
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Term
| RAM (Random Access Memory) |
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the part of a computer's temporary storage that holds a program and opens files while they are in use
Everything in RAM is erased and lost unless you save it before shutting down the computer |
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| a device that converts signals (and data) going to and coming from some other type of data carrier (such as the telephone system, radio waves, cable TV system, etc.) |
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a device that connects to a computer and displays information on a screen
the most frequently used output device
a soft copy |
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a hand-held, button-activated input device that when moved along a flat surface directs an indicator to move correspondingly on the screen, allowing the operator to visually move, select, and perform commands seen on screen
To use the mouse, you point, click, and drag |
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a collection of programs in the computer that controls how the system runs and processes information
also called system software
examples include: Unix, Mac OS, and Windows
usually pre-installed when you buy a computer |
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| data or information coming out of or displayed by the computer |
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| an added device, such as a printer, joystick, modem, or storage system, that works in conjunction with a computer to expand its capabilities |
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usually an arrow or other type of visual indicator that moves around on the display (screen) whenever the mouse is moved
To move a mouse, you point, click, and drag |
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| a connector to plug something into |
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a device that can produce a paper copy of something
hard copy
impact or non-impact |
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| a planned-out sequence of coded instructions and routines that tell a computer what to do and exactly how to do it |
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a device that allows a computer to "see" a drawing, photo or other flat piece of artwork so it can be read into the computer, edited, or stored
this is a peripheral input device |
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a program that organizes mostly numerical information into rows and columns which intersect and form cells
this is application software used by teachers to average grades and financial institutions |
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| a malicious computer program that is designed to "infect" a computer by attaching copies of itself into the programs or files stored on a computer's hard drive |
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a computer system or program either specially designed for or capable of creating, editing, and storing text documents, such as letters, notes, reports, etc.
it is application software |
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Definition
This type of computer is the most widely used type of device today.
It consists of a sturdy box-like case that holds the computer's motherboard, hard drive, CD, power supply, and any other system peripherals.
A mouse, keyboard, and monitor are usually purchased together as a package. |
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Definition
Although this class is quite a bit smaller when compared to the size of their desktop relatives, laptop/portable computers are truly full-blown computers in their own right. Being scaled down, they cost more.
They are powered by electricity or rechargeable batteries and are easily carried. |
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PDA (Personal Digital Assistant)
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Definition
These computers are usually hand-held and are even small enough to be clipped to a belt and worn.
They can take many forms such as cell phone, wristwatch, calculator, or a notepad-sized device that can be used with a pen-shaped writing tool that allows the device to understand handwriting.
They use rechargeable batteries and can be used a couple of days without recharging. |
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