Solapur University MCA (Semester-I) Paper on Digital Circuits and Microprocessors Oct 2019
| Sr. No. | Question |
| 1 | Which of the following gates would output 1 when one input is 1 and other input is 0?
(a) OR gate (b) AND gate (c) NAND gate (d) Both (a) & (c) |
| 2 | Which table shows the electrical state of a digital circuit’s output for every possible combination of electrical states in the inputs?
(a) Function table (b) Truth table (c) Routing table (d) ASCII table |
| 3 | A combinational circuit is one in which the output depends on the _____
(a) Input combination at the time (b) Input combination and the previous output (c) Input combination at that time and the previous input combination (d) Present output and the previous output |
| 4 | which is the correct order of sequence for representing the input values in K-map?
(a) (00,01,10,11) (b) (00,10,01,11) (c) (00,01,11,10) (d) (00,10,11,01) |
| 5 | What does the below stated Boolean Law imply, while performing below stated operation of an input with ‘1’?
Express of Law : A+1=1 (a) Output will always be equal to input (b) Output will always be high (c) Output will always be low (d) Output will always be same |
| 6 | How many inputs are required for a 1-of-10 BCD decoder?
(a) 10 (b) 1 (c) 4 (d) 8 |
| 7 | A digital multiplexer is also known as ________
(a) Combinational circuit (b) Sequential circuit (c) Memory device (d) None of these |
| 8 | What logic function is produced by adding an inverter to the output of an AND gate?
(a) NAND (b) NOR (c) XOR (d) OR |
| 9 | Decimal number 10 is equal to binary number _______
(a) 1110 (b) 1010 (c) 1001 (d) 1000 |
| 10 | 1’s complement of 11100110 is ________
(a) 00011001 (b) 10000001 (c) 00011010 (d) 00000000 |
| 11 | INTA stands for _________
(a) Interrupt Act (b) Interrupt Acknowledge (c) Interrupt Accept (d) Interrupt Adverse |
| 12 | The ALE signal, when the pulse goes high, it indicates ______. When the pulse goes down it indicates data.
(a) Address (b) Read (c) Write (d) Fetch |
| 13 | The MOV instruction copies the contents of the ________ register into the destination register without any alteration.
(a) Data (b) Segment (c) Source (d) Offset |
| Published on 1st Oct 2021 | |
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