managing information and change in a connected world Worksheet

means retrieving an instruction or data from memory.
as hard disks and floppy disks , on which programs , data, and information to be stored permanently so they can be used again and again.
Program instructions and data reside in memory locations known as addresses.
consists of programs that perform specific tasks, such as word processing and spreadsheets preparation.
The internet grew out of a defense-related computer network known as ARPANet.
a number system with a base of 2. Unlike the familiar base 10 decimal system, the binary system use only two numbers (0 and 1).
‘’0’’ and ‘’1’’ is called a bit
use of windows 3.0 and later versions spread widely, programs designed special internet navigation software called browser.
group of eights bits, called a byte, is meaningful because, In a byte there are enough possible combinations of 0’s and 1’s to represent 256 (28) separate characters.
computer component containing the electrical circuits where data processing occurs.
online area provided by an online service or an internet host.
processor (also called microprocessor) is contained on a single chip, or thin piece of silicon containing electrical circuitry, and serves as the computer’s central processing unit.
equal to two ticks of the clock.
commonly refers to an electronic device that accepts input processes data into information stores programs and information and delivers output to the user.
directs and coordinates the overall operation of the computer system.
to a collection of raw unorganized content in form of words, numbers, sounds or images.
hold the data items being acted upon.
interpreting or translating the instruction into a form the computer understands.
PC designed to allow the system unit, input devices , output devices, and other connected devices to fit on top of , or under, a user’s desk or table , as shown in figure.
representing information using, ones and zeros.