Hi everybody...
This week I'm studying Computers and Internet subject 2nd week and we have learn't many things. But mostly we studied about the things which we've already learnt in IT class. This week, everybody knows each other and lecturer also already has recognized everyone. First of all in this week we have studied about computers. Firstly in a lecture we talked about all types of computers:
Abacus –
earliest recorded calculating device
After that we have learnt about Computer Hardware basics such as input , output , storage , hard disks , flash memories , cloud storages , optical disks and other types of storage. The lecturer Mr. Azamuddin gave us very deep explanation about all those topics in this week he showed us interesting videos and explained every single thing of the topics. I'm very happy from what I've learnt this week and I believe this education will be very useful in my future career and life.
This week I'm studying Computers and Internet subject 2nd week and we have learn't many things. But mostly we studied about the things which we've already learnt in IT class. This week, everybody knows each other and lecturer also already has recognized everyone. First of all in this week we have studied about computers. Firstly in a lecture we talked about all types of computers:
Pre computers and Early Computers
(before 1940's)
Experts concluded that
ancient civilizations had the ability to count and compute.
First Generation (1940-1950) : Vacuum
Tube
ENIAC [1945]: Designed by Mauchly & Echert, built by US
army to calculate trajectories for ballistic shells during Worls War II. Around
18000 vacuum tubes and 1500 relays were used to build ENIAC, and it was
programmed by manually setting switches
UNIVAC [1950]: the first commercial computer
Second Generation (1950-1964) :
Transistors
William Shockley,
John Bardeen, and Walter Brattain invent the transistor that reduce size
of computers and improve reliability. Vacuum tubes have been replaced by
transistors.
Third Generation (1964-1974) ::
Integrated Circuits (IC)
Microprocessor chips combine thousands of transistors, entire circuit on one computer
chip.
Fourth Generation (1974-Present) :: VLSI
/ULSI
VLSI = Very
Large-Scale Integration
ULSI = Ultra Large
Scale Integration
Combines millions of transistors
Fifth Generation (now and the future)
Based on artificial
intelligence - computers can think, reason and learn
These were all types of all generation of computers until now, lecturer gave us very clear and understandable description of them. After that we learnt about the Architecture of Computers and Computer Processing power.
-Computer Architecture
is the field of study of selecting and interconnecting hardware components to
create computers that satisfy functional performance and cost goals.
-When comparing
computers, the power of the computer is important. It is determined by the speed
and capacity (size) of each part of the computer.
Capacity is measured
in bytes (B) where
1 byte = 8 bits
(binary digits) = 1 character.
After all those topics we skipped to very interesting topic which was very useful for us. Its named Catgeoris of computers. Computer has 6 categories which are called.
1. Embedded Computers
2. Mobile devices/computers
3. PC/Personal computers
4. Midrange servers
5. Mainframes
6. Supercomputers
After that we have learnt about Computer Hardware basics such as input , output , storage , hard disks , flash memories , cloud storages , optical disks and other types of storage. The lecturer Mr. Azamuddin gave us very deep explanation about all those topics in this week he showed us interesting videos and explained every single thing of the topics. I'm very happy from what I've learnt this week and I believe this education will be very useful in my future career and life. 
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