Class 4 Chapter 4 Bits and Binary Code

 2. Answer the following questions: 
a. What are the two electrical conditions that a computer understands?

Ans: A computer understands two states of electrical conditions ON or OFF. 
 b. List the digits used for the binary number system.

Ans: 0 and 1 are the digits used for the binary number system.
c. List the digits used for the decimal number system.

Ans: 0,1,2,3,4,5,6,7,8,9 are the digits used for decimal number system.
d. How the digits are used in the binary number system? How are they read?

Ans: In a binary number system 0 represents the OFF stage of electricity and 1 represents the ON state of electricity. The binary number is read digit by digit for example 10 is read as One Zero. 
e. What are BITs and Bytes? 

Ans: Bit is the smallest unit of data and it is in single digits of the binary number system and the combination of 8 bits is called bytes.

f. What is binary code?

Ans: The changing of the data in terms 0s and 1s is called binary conversion and the result of this conversion is called binary code. 
g. What is the basic unit of storage/ data?

Ans: The basic unit of storage/data is bytes. 
h. What is ASCII?

Ans: Binary code is known as ASCII (American Standard Code for Information Interchange)
i. What is the ASCII value of the letter A"?

Ans: The ASCII value of the letter "A" is 01000001.