Document Text Contents
Page 17
Written by: Maryem Javed (Computer and Math’s teacher)
The Educators School Kasur Campus
E-mail: [email protected]
Computer Notes for 9
th
Class (Unit 1)
17
17
2. Special Purpose Computers
A computer designed for machine control or process control would be
different than a general purpose computer. The special purpose computers
are designed to solve specific problems. The computer program for solving a
specific problem is built right into the computer. Most analog computers are
special purpose computers. These special purpose computers are widely used
in industrial robotics.
Q14: Write down the Classification of Computers According to Size.
Ans: Classification According to Size:
Computers are classified according to sizes, speed and memory capacity.
Computers are of different types:
1. SUPER COMPUTERS
Super computer are the largest, fastest and the most expensive computer
systems in the world. They are used to process complex scientific jobs.
These computers are very expensive and the speed is measured in billions
of instructions per seconds. Supercomputers are manufactured using
thousands of processors. Its size is equal to full room. These computers are
used in Applications in medicine, Aerospace, Online banking and weather
forecasting etc.
There are very few companies in the world produce super computers.
Cary research and
ETA system Inc.
are two primary manufactures of super computers in United States.
Fujitsu
Page 18
Written by: Maryem Javed (Computer and Math’s teacher)
The Educators School Kasur Campus
E-mail: [email protected]
Computer Notes for 9
th
Class (Unit 1)
18
18
Hitachi
NEC
These are the companies in Japan, which produce super computers.
Famous supercomputers are:
Cray-1
Cray-2
Cray-3
Cray XMP
ETA-10
2. MAINFRAME COMPUTERS
Mainframe computers are large, expensive and very powerful computers that can
handle hundreds or thousands of connected users simultaneously. These
computers are capable of processing data at very high speed, millions of
instructions per second and have access to billions of characters of data. The size
of Mainframe is equal to door size or half room size. Mainframes store large
amounts of data, instructions and information. Many people can make use of the
same machine at the same time. These computers are used in banks, educational
institutions, insurance companies and airlines etc. Mainframes are manufactured
by IBM (International Business Machine), NEC (National Electronics
Corporation), HP (Hewlett Packard). Following are the different models of
Mainframe Computers available in the market:
Mark I
Whirlwind
IBM 701
IBM 360
Page 34
Written by: Maryem Javed (Computer and Math’s teacher)
The Educators School Kasur Campus
E-mail: [email protected]
Computer Notes for 9
th
Class (Unit 1)
34
34
Written by: Maryem Javed (Computer and Math’s teacher)
The Educators School Kasur Campus
E-mail: [email protected]
Computer Notes for 9
th
Class (Unit 1)
17
17
2. Special Purpose Computers
A computer designed for machine control or process control would be
different than a general purpose computer. The special purpose computers
are designed to solve specific problems. The computer program for solving a
specific problem is built right into the computer. Most analog computers are
special purpose computers. These special purpose computers are widely used
in industrial robotics.
Q14: Write down the Classification of Computers According to Size.
Ans: Classification According to Size:
Computers are classified according to sizes, speed and memory capacity.
Computers are of different types:
1. SUPER COMPUTERS
Super computer are the largest, fastest and the most expensive computer
systems in the world. They are used to process complex scientific jobs.
These computers are very expensive and the speed is measured in billions
of instructions per seconds. Supercomputers are manufactured using
thousands of processors. Its size is equal to full room. These computers are
used in Applications in medicine, Aerospace, Online banking and weather
forecasting etc.
There are very few companies in the world produce super computers.
Cary research and
ETA system Inc.
are two primary manufactures of super computers in United States.
Fujitsu
Page 18
Written by: Maryem Javed (Computer and Math’s teacher)
The Educators School Kasur Campus
E-mail: [email protected]
Computer Notes for 9
th
Class (Unit 1)
18
18
Hitachi
NEC
These are the companies in Japan, which produce super computers.
Famous supercomputers are:
Cray-1
Cray-2
Cray-3
Cray XMP
ETA-10
2. MAINFRAME COMPUTERS
Mainframe computers are large, expensive and very powerful computers that can
handle hundreds or thousands of connected users simultaneously. These
computers are capable of processing data at very high speed, millions of
instructions per second and have access to billions of characters of data. The size
of Mainframe is equal to door size or half room size. Mainframes store large
amounts of data, instructions and information. Many people can make use of the
same machine at the same time. These computers are used in banks, educational
institutions, insurance companies and airlines etc. Mainframes are manufactured
by IBM (International Business Machine), NEC (National Electronics
Corporation), HP (Hewlett Packard). Following are the different models of
Mainframe Computers available in the market:
Mark I
Whirlwind
IBM 701
IBM 360
Page 34
Written by: Maryem Javed (Computer and Math’s teacher)
The Educators School Kasur Campus
E-mail: [email protected]
Computer Notes for 9
th
Class (Unit 1)
34
34
