35 terms

Module 2

STUDY
PLAY
Peripheral
Anything connected to your computer
Input devices
to put information into a computer
keyboard
enter information in the form of words, numbers, and punctuation
mouse
you can point to objects, select objects, and move objects
scanner
collects information in the form of pictures
joystick
input device that usually has buttons that can be pressed to send instructions
microphone
used to input audio such as music into a computer
digital camera
captures photographs as digital files that can be uploaded directly to a computer
port
allows users to connect
external input devices to the computer system
output device
information out of a
computer
monitor
displays
information visually, just like a television set
printer
transfer images from a monitor to
paper. For instance, when you key an essay on a computer,
you can then print it out to turn in for class
speaker
carries information in the form of sound
process
The part of the computer that processes
information has many parts that work together
microprocessor
brain of a computer. A computer
makes almost all of its calculations in the microprocessor.
Not all microprocessors are the same
clock speed
the number of calculations the processor can
do each second.
CPU
is made of one
microprocessor in small computers
Memory
where computers keep their information, comes in
the form of computer chips.
RAM
holds information
temporarily
A storage device
is
another place where information is kept in a computer
hard drive
is the most widely used secondary storage device. They can be internal or external
floppy disk
contains a small portable disk inside a plastic cover. Floppy disks can hold up to 1.4 megabytes of information
ZIP disk
has a portable disk inside a plastic case. A ZIP disk can hold 100 to 750 megabytes
Flash memory
uses chips to hold information. You can add information to flash memory in large chunks rather than piece by piece, making storage faster and easier than with other types of memor
Optical disks,
use lasers to read and write information
CD-ROM
optical disk that can hold up to 1 gigabyte of information
DVD-ROM
is a CD-ROM that does not yet contain any information
CD-RW
an optical disk that can record information many times
network
is a group of computers that are connected to each other
Local Area Network (LAN)
is a connected group of computers that are close to one another
Wide Area Network (WAN )
that are not close to each other
operating systems (NOS)
help computers share information
network interface card (NIC
so that the computers can communicate over the network.
server
manages the flow of information on a network
network topology
actual arrangement of computers
in a network