Differences Hardwired and Microprogrammed Control Difference In A Minute

Differences between Hardwired and Microprogrammed Control

Attribute

Hardwired Control Unit

Microprogrammed Control Unit

Speed

Fast

Slow

Control functions

Implemented in hardware

Implemented in software

Flexibility

Not flexible to accommodate new system specifications or new instructions

More flexible, to accommodate new system specification or new instructions redesign is required

Ability to handle large/complex instruction sets

Difficult

Easier

Ability to support operating systems and diagnostic features

Very difficult

Easy

Design process

Complicated

Orderly and systematic

Applications

Mostly RISC microprocessors

Mainframes, some microprocessors

Instruction set size

Usually under 100 instructions

Usually over 100 instructions

ROM size

2K to 10K by 20-400 bit microinstructions

Chip area efficiency

Uses least area

Uses more area

About the Author: Ashok Nath

Ashok Nath is an Author in Surajchand99.com.np and is pursuing Bachelor's Degree In Computer Engineering From Nepal College Of Information Technology (NCIT) Pokhara University Nepal.

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