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Microinstruction length is determined by _____.
1. The maximum number of simultaneous micro operations that must be specified.
2. The way in which the control information is represented or encoded.
3. The way in which the next microinstruction address is specified.
  • a)
    1 and 2
  • b)
    2 and 3
  • c)
    1 and 3
  • d)
    All of these
Correct answer is option 'D'. Can you explain this answer?
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Microinstruction length is determined by _____.1. The maximum number o...
Format of micro instruction:
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Microinstruction length is determined by _____.1. The maximum number o...
The correct answer is option 'D', which means that all of the given options are factors that determine the microinstruction length. Let's explore each of these factors in detail.

1. The maximum number of simultaneous microoperations that must be specified:
Microinstructions are used to control the operations of a microprogrammed control unit (MCU) within a CPU. These microinstructions typically specify a set of microoperations that need to be executed simultaneously during each machine cycle. The number of microoperations that must be specified in each microinstruction determines the length of the microinstruction. If there are a large number of simultaneous microoperations, the microinstruction length will be longer.

2. The way in which the control information is represented or encoded:
Control information in a microprogrammed control unit is represented using encoding schemes such as binary or one-hot encoding. The choice of encoding scheme affects the number of bits required to represent each control signal. The length of the microinstruction is determined by the total number of bits needed to represent all the control signals. Different encoding schemes may require different lengths of microinstructions.

3. The way in which the next microinstruction address is specified:
Microprograms are typically organized as a sequence of microinstructions stored in a control memory. The next microinstruction to be executed is determined by the address specified in the current microinstruction. The method used to specify the next microinstruction address can vary. It could be a direct address, an indirect address, or an address calculated based on some condition. The way in which the next microinstruction address is specified affects the number of bits required to represent the address, thereby impacting the microinstruction length.

In conclusion, the length of a microinstruction is determined by the maximum number of simultaneous microoperations that must be specified, the encoding scheme used for control information, and the method used to specify the next microinstruction address. All of these factors have an impact on the overall length of the microinstruction.
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Microinstruction length is determined by _____.1. The maximum number of simultaneous micro operations that must be specified.2. The way in which the control information is represented or encoded.3. The way in which the next microinstruction address is specified.a)1 and 2b)2 and 3c)1 and 3d)All of theseCorrect answer is option 'D'. Can you explain this answer?
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