Class – XII

Subject : Digital Electronics & Micro Processors (Set - 1)

General Instruction:

1. Please check that this question paper contains 3 printed pages.
2. Code number given on the right hand side of the question paper should be written on the title page of the answer-book by the candidate.
3. Please check that this question paper contains 5 questions.
4. Please write down the Serial Number of the question before attempting it.
5. 15 minutes time has been allotted to read this question paper. The question paper will be distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the question paper only and will not write any answer on the answer script during this period.

1. What is the basic difference between digital and analog signals?

2. Convert the following decimal numbers to binary numbers:
(i) 37 .
(ii) 56

3. Add the following binary numbers:
(i) 1010 and 1011
(ii) 1001 and 1111

Courtesy: cbse.nic.in