NEW
Font size
WorksheetsEEE-3212 ( Quiz-1)
Total questions: 20
Worksheet time: 10mins
What are the 2 parts of the instruction?
Opinstruction and Opmemory
Opcommand and Opstate
Opcode and Operand
Opcommand and Opmemory
Assembly language is written using...
Binary/hexadecimal
English-like key words
Plain English
Abbreviated mnemonic keywords
register addressing mode
immediate addressing mode
based indexed addressing mode
direct addressing mode
16 bit
8 bit
32 bit
64 bit
Which of the following is true about microprocessors?
It has an internal memory
It has interfacing circuits
It contains ALU, CU, and registers
It uses Harvard architecture
How many bit address buses are present in the 8085 microprocessor?
16 bit
8 bit
32 bit
128 bit
After performing arithmetical or logical operations, the result is stored in -------.
Stack Pointer
Flag Register
Accumulator
Program Counter
When a carry flag is set (1)
A. when a subtraction results in no borrow.
B. in operation results in a carry
C. in operation results in a no carry.
both A& B
Which one is the following function is performed by the 8085 instruction MOV H, C ?
Moves contents of H register to C register.
Moves contents of C register to H register.
Moves contents of C register to HL register.
Moves contents of HL register to C register.
What does works in DAD instruction?
adds the contents (8bit) of the specified register pair with that of BC pair.
sub the contents (16bit) of the specified register pair with that of HL pair.
adds the contents (16bit) of the specified register pair with that of HL pair.
sub the contents (8bit) of the specified register pair with that of DE pair.
Consider the following register-
1. Accumulator & Flag Register
2. B and C registers.
3. D and E registers.
4. H and L registers.
1, 3 and 4
2, 3 and 4
1, 2 and 3
1, 2 and 4
A program counter in a digital computer----
Counts the number of programs run in the machine.
Counts the number of times a subroutine is called.
Counts the number of times the loops are executed
Points to the memory address of the current or the next instruction to be executed.
Which one of the following statements is correct regarding instruction CMP B?
Compare accumulator with register B.
Compare accumulator with memory.
Compare accumulator with register A.
The instruction does not exits.
The instruction JNC, 16 bit refers to jump to 16-bit address. If-
Sign flag is set.
Carry flag is reset.
Zero flag is set.
The carry flag is set.
XCHG instruction of 8085 exchange the content of---
top of stack with contents of register pair.
BC and DE register pairs.
HL and DE register pairs.
None of the above.
Which of the following data transfer is not possible in microprocessor?
Memory to accumulator
Accumulator to memory
Memory to memory
Memory to register.
Which of the following instructions 3-byte instruction?
MVI A
Jump
Mov A, M
LDAXB
An example of 8085 instruction that uses direct addressing is----
LDA 2050
CMA
RLC
RRC
Which STACK is used in 8085 microprocessor.
FIFO
LIFO
FILO
LILO
What output will be show after performing this code:
lda 2500
mov b,a
lda 2501
sta 2500
mov a,b
sta 2501
hlt
Input: 2500--> 5
2501-->4
Output:
2500--> 5
2501-->4
2500--> 4
2501-->5
2500--> 6
2501-->5
2500--> 5
2501-->6
