Embedded Systems Multiple Choice Questions and Answers

1. Which of the following is a coprocessor of 80386?

1. 80387
2. 8087
3. 8089
4. 8088

2. How are negative numbers stored in a coprocessor?

1. 1s complement
2. 2s complement
3. decimal
4. gray

3. How buffers are enabled in the parallel ports?

1. by the data register
2. by data direction register
3. by individual control register
4. by data and individual control register

4. How is baud rate supplied?

1. baud rate voltage
2. external timer
3. peripheral
4. internal timer

5. How is data detected in a UART?

1. counter
2. timer
3. clock
4. first bit

6. How is memory accessed in RISC architecture?

1. load and store instruction
2. opcode instruction
3. memory instruction
4. bus instruction

7. How many areas does the serial interface have?

1. 1
2. 3
3. 2
4. 4

8. How many bits are used for storing signed integers?

1. 2
2. 4
3. 8
4. 16

9. How many categories are there for the low-level simulation?

1. 2
2. 3
3. 4
4. 5

10. How many main signals are used with memory chips?

1. 2
2. 4
3. 6
4. 8