My Report

Digital Circuits Practice Test 4


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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1. One way to make a four-bit adder to perform subtraction is by ___________

2. What distinguishes the look-ahead-carry adder?

3. The summing outputs of a half or full-adder are designated by which Greek symbol?

4. Why is a fast-look-ahead carry circuit used in the 7483 4-bit full-adder?

5. How many basic binary subtraction operations are possible?

6. Serial communication can be sped up by __________

7. A serial subtractor can be obtained by converting the serial adder by using the _____________

8. The hexadecimal number (4B)16 is transmitted as an 8-bit word in parallel. What is the time required for this transmission if the clock frequency is 2.25 MHz?

9. The carry propagation can be expressed as ________

10. A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is __________


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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