The Era of Computers...
by Mr. Rodelio P. Barcenas
Faculty Computer Engineering

This is an illustration on how it all started. To view the image pls click

The birth of the transistor started the Electronics Era.  As you can see from the illustration, the orange blocks represents the path how the microprocessor started.   The Red Blocks are endpoints, Microprocessors and Microntrollers.  Further Developments followed. 

As a Summary, microprocessor only contains three areas of discussion, Registers, ALU, and some combinational circuits.

The Register Transfer Language...

Registers have an important role in the microprocessor system design and this is one of the major components which comprises the basic microprocessor system.  A simple register circuit can be represented by a language called RTL. We will be using a Binary Counter with Parallel Load IC as an example.

Here are some conditions: The circuit will act as a loader circuit if T = 1, data from the input side will transfer to the output register for every clock pulse. When T = 0, register A will count up for every clock pulse.

The circuit can now be translated into an RTL;

T : A <-- B (Transfer B to A)
{if T = 1, data from the input side will transfer to the output register for every clock pulse}

T': A <-- A + 1 (Increment A)
{When T = 0, register A will count up for every clock pulse}

where:
T - is called the control element
: - symbolizes clock
<- - arrow symbol for data transfer
A+1 - microoperation

Conclusion: A register circuit can be represented by an RTL

At these point I know you might be wondering what is the connection of RTL to microprocessors. Just keep on reading and I'll get into that later. For now we have to go through the process. Keep in touch you'll get the beauty of it later...

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