Computing Revision Binary etc

Question	Answer
Hardware	The physical parts of a computer system.
Examples of Hardware	Graphics card, hard disk drive, CD drive
Input device	A device that inputs data into the computer eg a keyboard, mouse, microphone
Output device	A device that displays data or sounds from the computer eg a monitor, speakers, headphones,
What is software	The programs, applications and data in a computer system. Any parts of a computer system that isn't physical.
What is a storage device	Hardware that stores data in the computer eg Memory RAM ROM
What is a single binary digit known as	A Bit
Bits in a kilobyte	1024
How many bits in a byte	8000
What number system does a computer use	Binary (Base 2)
Decimal to Binary Convert 28 to Binary	Working right to left write out the numbers 1, 2, 4, 8, and so on doubling each time to 128. 128-64-32-16-8-4-2-1 0-0-0-1-1-1-0-0 28 has a 16 in it, leaving 12 and 12 is 8 + 4
How many different binary codes can be represented in 2-bits	4
Decimal to binary Convert 28 to Binary	Working right to left write out 1,2,4,8 and so on doubling each time to 128 128 64 32 16 8 4 2 1 0 0 1 1 1 0 0
What is ASCII	American Standard Code for Information Interchange, A 7-bit character set used for representing keyboard characters
How many Bits would be needed to represent 64 characters?	64
Binary Addition	Image: Binary Addition (image/jpeg)

Resource summary

	Created by Ben Powell almost 8 years ago