Evolution of computers has been
drastically and dramatic. Computers have been in the existence in the early
1950s, but people were not able to use them. When you mention the word computer
most people only think of the Desktop Computer, but in reality computer start
with our calculator.
Therefore a computer can be defined
as an electronic device that input, process and output information. Lets take
in the case of a calculator, when adding figures you are example 1+1 =2, now
you will be input data which is 1+1, this data is going to be processed through
addition process, to give us 2. Now 2 is the process information which is the
output.
The first computers to be invented
were very big, slow and time consuming with limited capabilities. Computers
history and has gone through various stage as they evolve starting with the
first computers, before first generation computers we had the ABACUS computers
which were limited by their capabilities.
The first generation were developed
in the early 1940s with their architect based on massive electronic value. They
were vacuum tube dependent and without this they would not operation, from
first generation computers came in the second generation computers which were
better than first generation computers in performing electronic calculation but
still were slow, an example of this second generation was the ABM 7000 series.
As the computer kept on evolving
into generations people being more knowledge about them and the invention kept
on being better, due to this the third computer generation was realized , this
computers generations were powerful than the first and second generation
computers, and use integrated circuit normally known as IC. An example of the
third generation computers was IBM 360 Series.
The third generation computers led
to the fourth generation in computer history, with this generation, electronic
function were getting better, efficient and more enjoy with relatively less
errors compared to the previous computer . And this are the computers used in
our day to day activities. They are also using Integrated Circuit IC for their
daily operation. The fourth generation computer will lead to the fifth
generation computer which will be more powerful and ability to take instruction
from people. This is known as artificial intelligence, in some instances robots
are being used to do certain work which were done by human beings.