ABSTRACT
Two popular implementations of the control unit (HCU and MCU) were described
in Chapter 6. Subsequent chapters provided the details of architectural features
found in modern-day machines. Inclusion of any new feature into the architecture
requires a corresponding enhancement to the control unit. The following parameters
are usually considered in the design of a control unit:
Speed: The control unit should generate control signals fast enough to utilize the
processor bus structure most efficiently and minimize the instruction and program
execution times.
