Dr. Von Neumann’s Computer-(1)

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There is tough logic in the “registers”

Each register is like a military barrack

Made of a row of eight or sixteen logic gates,

The logic gates here are different

Each logic gate is called a “flip flop”.

A strange name you may say!

The flip-flops is a special kind of logic gate

And is the new version of a logic gate.

Each flip flop chamber too can keep

Only a Boolean one or a Boolean zero

But it is in a completely different way.

In the ordinary logic gates

The electric currents simply flow and flow

The zeroes and ones coming and going out

Can not stop but only flow and flow

They flow with terrible speed

It is two hundred thousand kilometers in a second

It is rather too high for any useful work.

When a customer enters a bank

He has to stop at the counter

For a few minutes at least

Otherwise how can he deposit or draw big monies?

Here in computer also it is the same thing

If currents flow too fast how can mathematics be done?

So the engineers constructed the flip flops

To make the zeroes and ones stop as long as they want.

The zeroes and ones whirl and whirl

A billion times and look like stationary whirlpools

The trick is like this .

The perfect zeroes or ones

Emerging at the front door of the logic gate

Are again fed at one of the two doors on the back wall

The zero or one stops there

Till the computer engineer gives a command

To make it proceed further.

A group of eight or sixteen flip flops in a row

Form complicated circuits called “registers”

The “registers” are among the most important basic parts

Which created the modern computer.

The registers– there is a great variety of them–

Are just like highly trained office clerks

Each is trained to perform a specific job

In a most perfect way

Scores of clerks working together

Constitute an office or bank

Similarly scores of registers constitute a processor

Like the “arithmaticand logic unit “

Or the ALU in short..

Let us learn how a register works.


The eight bit or sixteen bit codes

Of numbers filling a register

Are detained and checked

. The bit string representing a number

Stops for a millionth of second in a register

To be examined and directed to destination.

(But even that much detention is rather too long)



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