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Aim

Theory

Objective

Procedure

Pretest

Demo

Practice

Posttest

Assignment

References

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Feedback

Decoder with 7 segment display

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1. What is the purpose of a 7-segment decoder?

a: To digitalise the numbers from 1 to 9 Explanation

Explanation

b: To convert parallel input to serial input Explanation

Explanation

c: None Explanation

Explanation

d: Both of these Explanation

Explanation

2. For displaying the digit '5' on a 7-segment display, which segments should be ON (active)?

a: a, b, c, d, e, f, g Explanation

Explanation

b: a, c, d, f, g Explanation

Explanation

c: b, c, e, f, g Explanation

Explanation

d: a, b, d, e, f Explanation

Explanation

3. In a common-cathode 7-segment display, how is a segment turned ON?

a: By applying LOW (0) signal to the segment Explanation

Explanation

b: By applying HIGH (1) signal to the segment Explanation

Explanation

c: By applying alternating HIGH and LOW signals Explanation

Explanation

d: By disconnecting the segment Explanation

Explanation

4. What is the 4-bit BCD representation of decimal 7?

a: 0111 Explanation

Explanation

b: 1011 Explanation

Explanation

c: 1100 Explanation

Explanation

d: 0110 Explanation

Explanation

5. Which of the following binary combinations are INVALID in BCD (Binary Coded Decimal)?

a: 1000, 1001 Explanation

Explanation

b: 1010, 1011, 1100, 1101, 1110, 1111 Explanation

Explanation

c: 0110, 0111 Explanation

Explanation

d: Binary Coded Data Explanation

Explanation

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