Surprise Quiz I - 20EI209 Microcontrollers and Embedded System

1. Cite the Capacity of on-chip RAM and ROM in 8051

• 256 Bytes of RAM and 64 KB of ROM

• 256 Bytes of RAM and 4KB of ROM

• 128 Bytes of RAM and 4KB of ROM

• 128 Bytes of RAM and 64KB of ROM

2. Microprocessor contains

• ALU and Registers

• Control Unit and Registers

• ALU and Control Unit

• ALU, Control Unit and Registers

3. When a subroutine is called, the return address is stored in ------- register

• DPTR

• Stack Pointer

• PSW

• Program Counter

4. Identify from the below the microcontroller is ------

• An tiny programmable computer

• A Series of actions/steps that lead to a clear result

• The information or data entered in a system by a user

• The information or data produced by a system based on the input information

5. The signed char for 8051 C is an -------- data type

• 8 bit

• 16 bit

• 32 bit

• 64 bit

6. The Auto reload condition is allowed in --------- mode of a timer

• Mode 0

• Mode 1

• Mode 2

• Mode 3

7. 8051 can handle ------ interrupt sources

• 6

• 4

• 8

• 2

-------- instruction perform jump indirect addressing relative to DPTR

• JMP A+DPTR

• JMP DPTR

• JMP@A+DPTR

• SJMP A+@DPTR

9. ------ frequency of the clock that is being used as the clock source for the timer

• Crystal frequency/12

• Crystal frequency/24

• Crystal frequency/32

• Crystal frequency/6

10. If Timer 1 is to be used a counter, then at what particular pin clock pulse need to be applied?

• P3.4

• P3.3

• P3.2

• P3.5