Computer Science General
Knowledge One Liner MCQs 2020
Computer Science General
Knowledge One Liner MCQs 2020 Computer Fundamental MCQs,
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COMPUTER BASICS - TERMINOLOGY
Application – A computer program
that does specific tasks such as word processing
or spreadsheets.
Bit – Represents a binary
digit which is the amount of information
obtained by asking a ‘yes’ or ‘no’ question. This is also the smallest unit
of information stored on a computer as a 0 or 1.
Blinking Cursor –
This is a vertical blinking bar that locates the position on the screen where text can be
inserted or deleted. This appears most frequently in text or dialog boxes.
Byte – Data is stored on a
computer in Bytes. A byte is one character,
which may be a number or letter. A byte is composed of 8 consecutive bits.
·
1,000 bytes = 1 kilobyte (K or KB)
·
1,000 KB = 1 megabyte (MB)
·
1,000 MB = 1
gigabyte (GB)
·
1,000 GB = 1 Terabyte (TB)
Cache This is a type of memory and is similar to RAM. Cache is used by the computer to move data between the
RAM and CPU.
CD-ROM
– A removable disk that stores data. A
CD-ROM can only be read. You cannot
record (save) data onto one. You may however record (save) onto a CD-Rewritable
disk. This is most often called a CD. A CD looks like a music CD, but contains
data instead of music.
Computer – A collection of
electronic parts that allow software programs to run that perform certain tasks. A computer can accept input,
change data, store data and display data.
CPU
– The CPU (central processing unit), is
the brain of the computer.
New Windows-based programs use a Pentium
processor primarily.
Cursor
– A synonym for the pointer, which is
controlled by the mouse.
The cursor may take different shapes.
DVD (Digital Versatile Disc) – Technology that store more information than a CD-ROM and can be written upon.
The disk resembles a CD-ROM but has approximately seven times the storage
capacity.
File
– A collection of data with a name.
Flash Drive – This is a small
portable hard drive that plugs into a USB
port and allows you to transport files between different computers. Also
called a thumb drive.
Graphical User Interface (GUI) A program that
helps you more easily work with you
operating system and application programs by providing pictures and visual
clues to help you work. Windows is the GUI on PCs.
Hand Pointer - The cursor changes into a pointing hand
when it passes over a hypertext
link. This allows connecting directly to the link.
Hard Drive – The place where
programs and files are stored in a computer.
Also called the Hard Disc. On PCs this is often the c:// drive.
Hard Disc Space –
The amount of permanent storage of data measured in bytes. This storage exists whether the computer is on or off.
Hardware – The physical
components of the computer. They usually
include the; monitor, printer, mouse, keyboard and modem.
Hourglass – This is the symbol
that indicates the computer is working to
retrieve or send data or locate a webpage.
Hypertext Link –
These links are clicked on as text, images or files that open another web page.
Text Hyperlinks are often a different color than the
words around them.
I
Beam – As the cursor moves over text, the
pointer will change into an
‘I.’ This facilitates word processing
and copying text. See Blinking Cursor.
I or │
Keyboard
– Similar in part to a typewriter
keyboard, this is used to key (type)
in commands, text and data.
Memory (RAM) – The amount of temporary storage that
you can use at one time. Memory
stores ends when the computer is shut down. This is the reason that you save
work before turning off the computer. Data is saved from RAM to the computer or
onto a storage unit, such as a CD.
Modem – This is a way to
transfer data through a telephone or cable line generally by the Internet. It may be internal or external. Some
modems are used to fax or act as answering machines.
Monitor – Similar to a
television screen, the monitor allows you to see the data on your computer.
Motherboard – The circuit board that functioning
parts of the computer connect to is
the motherboard. The CPU, RAM and cache all plug into the motherboard.
Mouse – A hand-operated
device to control the cursor on the screen. The mouse for PCs has two buttons. The button is usually clicked once
to select an item on the screen. Double-clicking the left button opens windows
or programs.
Multitasking –
This describes the ability to do more than one thing at a time. For computer use this means that
you may have more than one program open at time in the memory, but only one
program can actually be fully active. Inactive programs can be processing data
or doing other tasks in the background.
Network
– A group of two or more computers
linked together.
NIC
(Network Interface Card) – A card is put in
the computer allowing connection to
a network.
Operating System – Directs the computer how to operate.
It acts as a mediator between the
hardware and the application programs that are used for work. This allows
access to computer files, loads application programs into memory and closes
programs.
Peripheral – This describes
anything that can be attached to the computer
input ports, such as; the keyboard, printer, mouse, external modem, scanner or
external hard drive.
Pointer – The cursor is a symbol that moves
across the screen to identify location.
The cursor appears as a pointer when it is moving across a page and not on
text.
Port – Connection on the
computer that allows input devices like monitors,
disk drives, the mouse, or keyboards. Common ports are serial for connecting a
modem or a mouse, USB for connecting a scanner, digital camera, Ethernet ports
for connecting to a network, and audio in/out ports for connecting to
headphones or a microphone.
RAM
– See Memory
Resolution – The degree of sharpness,
or clarity or what is seen on a computer
screen. The resolution is measured by the number of dots (pixels) of color that
are displayed across and down the screen. As resolution increases, the size of
the characters and images gets smaller, but sharper.
Scanner – A peripheral device
that can copy documents, pictures or photographs
directly into the computer converting the images into digital files. Images may
then be stored or manipulated (changed).
Software – These are the programs (applications)
that allow the computer to operate
or do certain tasks.
Sound Card – This device allows
the computer to reproduce music, sounds
and voices. The computer needs a sound card to hear the audio portion of web
sites or often to play multimedia games.
Thumb
Drive – See Flash Drive
USB Port – The Universal
Serial Bus is accessed through small rectangular port on the front or back of computer that allows peripheral
devices such as digital cameras and external hard drives to connect to the
computer. See Ports for other types
of connections.
Video
Card – This allows images to be sent to the
monitor.