SECOND PERIODIC EXAMINATION IN ELECTRONICS AND ROBOTICS 10

Chloe wants to use a base two or binary number system for her program, which of the following numerals can be used?

• 0 and 1

• 1 and 2

• 0, 1 and 2

• 0, 1, 2 and 10

What is the octal number system?

• A. A number system based on two number, 0 and 1

• B. A number system based on ten numbers, 0-9

• C. A computer coding system

• D. The way we work numbers in two step operations

How is the binary system useful in computers?

• Computer code only reads the numbers 0 and 1

• Computers have ten keys

• Computers were made to read real numbers

• Electronic components have two states – on or off

What is the binary number of the decade number 75?

• 1001 1101

• 0100 1011

• 1110 0110

• 1010 1010

Identify the missing binary number in the sequence: 001, 010, 011, ____, 101:

• A. 110

• B. 111

• C. 100

• D. 000

A number is presented in binary as 1001 1101. What is the decimal equivalent?

• 158

• 157

• 128

• 139

What is the equivalent binary number of the sum “11012” and “11112”?

• 0001 1100

• 1110 0011

• 1010 1010

• 0001 1011

You need to store a binary number with a decimal value of 128. What is the minimum number of bits required to represent this number?

• 10

• 9

• 8

• 7

What is the possible inputs of an OR gate if the output is “1” or HIGH?

• I, III, & IV

• I only

• II only

• II & IV

If an XOR gate outputs a 1 for a given input, which of the following must be true?

• The inputs are different.

• Both inputs are 0

• Both inputs are 1

• The inputs are the same.