ALL THE BEST!!!
MICROCONTROLLER-EC JODHPUR-DEC BATCH-24TH FEB 2025
1 / 50
Micro-blogging can be specified as __________.
2 / 50
Which of the following pins of a microcontroller are directly connected with 8255?
3 / 50
Microprocessors as switching devices are for which generation computers
4 / 50
MOV A, @ R1 will:
5 / 50
Bit-addressable memory locations are:
6 / 50
Microcontrollers often have:
7 / 50
An alternate function of port pin P3.4 in the 8051 is:
8 / 50
Which of the following devices are specifically being used for converting serial to parallel and from parallel to serial respectively?
9 / 50
This statement will set the address of the bit to 1 (8051 Micro-controller) SETB 01H
10 / 50
What is the function of this instruction “WDTCTL = WDTPW | WDTCONFIG”, where **#define WDTCONFIG (WDTCNTCL|WDTSSEL)**
11 / 50
Which of the following is a key feature of a microcontroller in comparison to a general-purpose processor?
12 / 50
The I/O ports that are used as address and data for external memory are:
13 / 50
Does 8255 have handshaking capability?
14 / 50
Why are solid-state relays advantageous over electromechanical relays?
15 / 50
LEAST COUNT OF A OUT SIDE MICROMETER
16 / 50
When the microcontroller executes some arithmetic operations, then the flag bits of which of the following register are affected?
17 / 50
Which register used as an operand register?
18 / 50
The microcontroller is useful in systems that have no variable programs for dedicated applications.
19 / 50
What is the most common power supply voltage for a microcontroller?
20 / 50
The 8051 has ________ parallel I/O ports.
21 / 50
The following program will receive data from port 1, determine whether bit 2 is high, and then send the number FFH to port 3:
READ: MOV A,P1ANL A,#2HCJNE A,#02H,READMOV P3,#FFH
22 / 50
Why are ULN2803 normally used between the microcontrollers and the relays?
23 / 50
What is the internal Vref of an Atmega32 series?
24 / 50
25 / 50
Which of the following types of memory is non-volatile?
26 / 50
Both registers TL0 and TL1 are needed to start Timer 0.
27 / 50
The special function registers are maintained in the next 128 locations after the general-purpose data storage and stack.
28 / 50
1 MICRON EQUAL TO ------------ MM
29 / 50
Device pins XTAL1 and XTAL2 for the 8051 are used for connections to an external oscillator or crystal.
30 / 50
The vector address of the external interrupt 1 is ________
31 / 50
In microcontroller programming, what does "ADC" convert?
32 / 50
The total external data memory that can be interfaced to the 8051 is:
33 / 50
IN CNC SYSTEMS MULTIPLE MICROPROCESSORS & PROGRAMMABLE LOGIC CONTROLLERS WORK-----------
34 / 50
Which of the following commands will copy the contents of location 4H to the accumulator?
35 / 50
Which of the following components are found in microcontrollers for interfacing with the external world?
36 / 50
The vector address of the external interrupt 0 is ________
37 / 50
The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code.
38 / 50
The statement LCALL READ passes control to the line labelled READ.
39 / 50
The 8051 can handle ________ interrupt sources.
40 / 50
Which register is used for accessing the external data memory?
41 / 50
When the 8051 is reset and the line is HIGH, the program counter points to the first program instruction in the:
42 / 50
The last 96 locations in the internal data memory are reserved for general-purpose data storage and stack.
43 / 50
The 8255 is a ______ chip.
44 / 50
Which of the following steps have to be followed for interfacing a sensor to a microcontroller 8051?
45 / 50
The ADC0804 has ________ resolution.
46 / 50
Which of the following instructions will load the value 35H into the high byte of timer 0?
47 / 50
Data transfer from I/O to external data memory can only be done with the MOVX command.
48 / 50
The total amount of external code memory that can be interfaced to the 8051 is:
49 / 50
The 8-bit address bus allows access to an address range of:
50 / 50
A label is used to name a single line of code.
