MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

DIGITAL LOGIC

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many outputs will a decimal to BCD encoder have?
A
4
B
8
C
10
D
12
Explanation: 

Detailed explanation-1: -Decimal-to-BCD encoder is the type of encoder that usually consists of ten input lines and 4 output lines. Each input line corresponds to each decimal digit and 4 outputs correspond to the BCD code which is represented in 4 bits.

Detailed explanation-2: -simple decimal-to-BCD encoder is a digital circuit that has 10 input lines and 4 output lines. The inputs represent the 10 decimal numbers from 0 to 9, where only one input can be active. The outputs indicate the BCD code that represents the active input.

Detailed explanation-3: -A 4-bit priority encoder (also sometimes called a priority decoder). This circuit basically converts the 4-bit input into a binary representation. If the input n is active, all lower inputs (n-1 ..

Detailed explanation-4: -In 4 to 2 line encoder, there are total of four inputs, i.e., Y0, Y1, Y2, and Y3, and two outputs, i.e., A0 and A1. In 4-input lines, one input-line is set to true at a time to get the respective binary code in the output side. Below are the block diagram and the truth table of the 4 to 2 line encoder.

Detailed explanation-5: -A BCD to Decimal decoder has 10 number of outputs because the decimal digit’s range is from 0 to 9.

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