Languages [3i Infotech Placement]: Sample Questions 514 - 515 of 546

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Question 514

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Write in Short

Short Answer▾

A good way of unit testing a s/w program is

Explanation

  • Unit testing essentially breaks software down into specific functions and then tests each individually for any logic flaws.
  • It is done at a level where individual units and components of software are tested.
  • It is done to validate each unit of the software- to ensure that it performs as designed.
  • Reduces the number of bugs released during deployment and this is critical for effective software development.

Question 515

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Describe in Detail

Essay▾

What are the different addressing modes in 8085?

Explanation

Immediate addressing mode

  • The 8/16-bit data is specified in the instruction itself as one of its operand.
  • Example: MVI K, 20F: means 20F is copied into register K.

Register addressing mode

  • Data is copied from one register to another.
  • Example: MOV K, B: means data in register B is copied to register K.

Direct addressing mode

  • Data transfer is from one register to another by using the address pointed by the register.
  • Example: MOV K, B: means data is transferred from the memory address pointed by the register B to the register K.

Implied addressing mode

  • The mode dosen ′ t require any operand; the data is specified by the opcode itself.
  • Example: CMP.
The Different Addressing Modes in 8085

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