Computer Organization Architecture - Machine instructions and addressing modes

1:   A low memory can be connected to microprocessor by using
A. INTER
B. RESET IN
C. Both (a) and (b)
D. READY
 
 

Option: D

Explanation :


2:   To put the microprocessor in the wait state
A. lower the HOLD input
B. lower the READY input
C. raise the HOLD input
D. None of these
 
 

Option: B

Explanation :


3:   A basic instruction that can be interpreted by a computer generally has
A. An operand and an address
B. A decoder and an accumulator
C. Sequence register and decoder
D. None of these
 
 

Option: A

Explanation :


4:   In a microprocessor system with memory mapped I/O
A. Devices have 8-bit addresses
B. Devices are accessed using IN and OUT instructions
C. There can be a maximum of 256 input devices and 256 output devices
D. Arithmetic and logic operations can be directly performed with the I/O data.
 
 

Option: D

Explanation :


5:   The addressing mode used in an instruction of the form ADD X, Y, is
A. absolute
B. immediate
C. indirect
D. Relative
 
 

Option: A

Explanation :



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Syllabus included in this section is-

  • Machine instructions and addressing modes
  • ALU and data-path
  • CPU control design
  • Memory interface
  • I/O interface (Interrupt and DMA mode)
  • Instruction pipelining
  • Cache and main memory
  • Secondary storage
  • Hardwired and Microprogrammed processor design
  • Instruction formats 
  • Addressing modes
  •  Memory types and organisation
  • Interfacing peripheral devices
  • Interrupts
  • Microprocessor architecture
  • Instruction set and Programming (8085, P-III/P-IV)
  • Microprocessor applications.

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