grade 8. Chapter 1. Computer basics

Question 1

What is the encoding standard that computer uses to represent data?

Accepted Answer

computers use analphabet that is called ASCII.

Question 2

Convert the following numbers from decimal to binary equivalents: 112 =

Accepted Answer

1110000

Question 3

How is information stored in a computer?

Accepted Answer

A computer stores all data as numbers of 0 and 1.

Question 4

Convert the following numbers from binary to decimal equivalents:100101 =

Accepted Answer

37

Question 5

On which parts of the body should paid attention to use electronic devices properly?

Accepted Answer

Using the keyboard and mouse for a long time will causepain in neck, shoulders and in the wrists.

Question 6

Convert the following numbers from decimal to binary equivalents: 25 =11001

Accepted Answer

True

Question 7

The smallest unit of information is called a bit.

Accepted Answer

True

Question 8

What kind of activities should be done to prevent from negative effects of using electronic devices?

Accepted Answer

all the answers are correct!

Question 9

Represent the following message in binary using ASCII: “Hello. I like to study ICT”

Accepted Answer

72 101 108 108 111 46 32 73 32 108 105 107 101 32 116 111 32 115 116 117 10

Question 10

Convert the following numbers from binary to decimal equivalents: 100010 = __________

Accepted Answer

34

Question 11

Convert the following numbers from binary to decimal equivalents: 111010 = 34

Accepted Answer

True

Question 12

Convert the following numbers from decimal to binary equivalents: 254 =

Accepted Answer

11111110

Question 13

In ASCII each character is coded as a _____ byte or _____ bits .

Accepted Answer

1 byte, 8 bit

Questions 13