computer science

Question 1

explain why computers use binary numbers

Answer 1

computers use electricity. electricity can be on [1] or off [0]

Question 2

explain what is meant by a computer system

Answer 2

a collection/system of hardware and software that process data in binary form

Question 3

give two examples of data types used in computer

Answer 3

words, numbers, letters, integers etc

Question 4

describe the difference between data and information

Answer 4

data is not processed whereas information is processed data

Question 5

state the base of the binary number

Answer 5

base 2

Question 6

state the size of the binary number 10101101 in:

a) bits
b) nibbles
c) bytes

Answer 6

a) 8 bits
b) 2 nibbles
c) 1 byte