computer must temporarily store at least those pieces of data that are being worked on at any given moment. Equally important, the computer performs a long-term data storage function (Files of data)

Data may take a wide variety of forms, and the range of processing requirements is broad

Within the computer, a control unit manages the computer’s resources and orchestrates the performance of its functional parts in response to instructions

provides for communication among CPU, main memory, and I/O

Moves data between the computer and its external environment

Stores data

Controls the operation of the computer and performs its data processing functions; often simply referred to as processor

Some mechanism that provides for communication among the control unit, ALU, and registers

Controls the operation of the CPU and hence the computer

Performs the computer’s data processing functions

Provides storage internal to the CPU

control unit consists of

stores microprogram

stores instructions and data

User/Modified

System/ROM

A way to describe microoperations capable of being performed by the data flow (data registers, data buses, functional units) at the register transfer level of design (RT)

Also describes conditional information in the system which cause operations to come about

Register Transfer Notation is A “shorthand” notation for …..

The general format of an RTN statement:

The possible locations in which transfer of information occurs are