First generation computers
- Used vacuum tubes in their memory
- Large in physical size
- consumed a lot of power
- Produced a lot of heat
- The computers constantly broke down due to the excessive heat generated; hence were short- lived and were not very reliable
- Their internal memory capacity/ size was low
- Slow in processing data
- Very costly
- Used magnetic drum memories
- Cards were sued to enter data into the computers
Second generation computers
- Used transistors in their memory
- They consumed less power & produced less heat than the first generation computers
- They were relatively faster than the 1st generation computers
- Used magnetic core memories
- Were less costly than first generation computers
- RAM memory capacity was 32 KB
Third Generation computers
- Used integrated circuits in their memory
- They were faster than second generation computers
- RAM memory capacity was 2 GB
- Slightly smaller in size than 1st & 2nd generation computers
- They used a wide range of peripheral devices
- Could support remote communication facilities/ more than one user at the same time
- Magnetic disks were introduced for storage purposes
Fourth generation computers
- Used large scale integrated (LSI) circuits & very large scale integrated (VLSl) circuits in their memory
- They were small & very fast
- Had storage (memory) capacity
- Magnetic disks, bubble memories & optical disks were used for storage
- The first operating system was introduced
Fifth generation computers
- Are the modern computers
- Are designed/ constructed using parallel architectures, 3 –D circuit design & superconducting materials
- Are very powerful, with very high processing speeds
- The computers can perform multiprocessing
- Have virtually unlimited ( very high) memory sizes
- Can support complex programs
- Use advanced hard disks and optical disks for storage, e.g. DVDs
- Use of zip disks
- Use of multi user operating systems & advanced application programs
Kavungya answered the question on June 5, 2019 at 07:12
-
Explain the following input/ output terms as used in computer systems. Give an example for each
(a) Read
(b) Write
(Solved)
Explain the following input/ output terms as used in computer systems. Give an example for each
(a) Read
(b) Write
Date posted:
June 5, 2019
.
Answers (1)
-
A manager wishes to replace the current manual system with a computerised one. Describe three main areas that must be evaluated to justify the replacement....
(Solved)
A manager wishes to replace the current manual system with a computerised one. Describe three main areas that must be evaluated to justify the replacement.
Date posted:
May 7, 2019
.
Answers (1)
-
Students of a school intend to elect their school captain by secret
ballot. State three ways in which computers can be used to improve the
election process.
(Solved)
Students of a school intend to elect their school captain by secret
ballot. State three ways in which computers can be used to improve the
election process.
Date posted:
May 7, 2019
.
Answers (1)
-
List three factors that should be considered when developing a database
application and give reasons why each should be considered.
(Solved)
List three factors that should be considered when developing a database
application and give reasons why each should be considered.
Date posted:
May 7, 2019
.
Answers (1)
-
What is the difference between a CRT’S monitors and a flat panel display
(Solved)
What is the difference between a CRT’S monitors and a flat panel display.
Date posted:
May 1, 2019
.
Answers (1)
-
To prevent unauthorized access to the computer room, which control measures should be implemented?
(Solved)
To prevent unauthorized access to the computer room, which control measures should be implemented?
Date posted:
April 24, 2019
.
Answers (1)
-
List the facilities that can ensure proper ventilation in a computer room
(Solved)
List the facilities that can ensure proper ventilation in a computer room
Date posted:
April 24, 2019
.
Answers (1)
-
Explain the dust control process in a computer laboratory.
(Solved)
Explain the dust control process in a computer laboratory.
Date posted:
April 24, 2019
.
Answers (1)
-
Explain the dump control process in a computer laboratory
(Solved)
Explain the dump control process in a computer laboratory.
Date posted:
April 24, 2019
.
Answers (1)
-
List the examples of secondary storage devices.
(Solved)
List the examples of secondary storage devices.
Date posted:
April 24, 2019
.
Answers (1)
-
Outline four basics operations associated with a change in state of a process
(Solved)
Outline four basics operations associated with a change in state of a process.
Date posted:
April 23, 2019
.
Answers (1)
-
Explain briefly the difference between bound and unbound controls
(Solved)
Explain briefly the difference between bound and unbound controls
Date posted:
April 17, 2019
.
Answers (1)
-
What is the difference between a teletext and videotext communication.
(Solved)
What is the difference between a teletext and videotext communication.
Date posted:
April 17, 2019
.
Answers (1)
-
Give the advantages and disadvantages of ring topology.
(Solved)
Give the advantages and disadvantages of ring topology.
Date posted:
April 17, 2019
.
Answers (1)
-
Write down all the input and output devices of an ATM machine of Pesa-point in Kenya.
(Solved)
Write down all the input and output devices of an ATM machine of Pesa-point in Kenya.
Date posted:
April 17, 2019
.
Answers (1)
-
Identify the parts of the following e-mail address labelled A, B, C and D
(Solved)
Identify the parts of the following e-mail address labelled A, B, C and D
Date posted:
April 17, 2019
.
Answers (1)
-
Your manager wishes to be connected to the Internet. He already has a powerful personal Computer (PC), a printer, and access to a Telephone line....
(Solved)
Your manager wishes to be connected to the Internet. He already has a powerful personal Computer (PC), a printer, and access to a Telephone line. However, he understands that he will need a Modem.
State why a modem is required to connect him to the internet.
Date posted:
April 17, 2019
.
Answers (1)
-
Give three ways you can wrap text on an object.
(Solved)
Give three ways you can wrap text on an object.
Date posted:
April 17, 2019
.
Answers (1)
-
What commands are used in place of portrait and landscape page orientation in PageMaker?
(Solved)
What commands are used in place of portrait and landscape page orientation in PageMaker?
Date posted:
April 17, 2019
.
Answers (1)
-
Explain how ‘parents’ and ‘child’ tables are related in relational database.
(Solved)
Explain how ‘parents’ and ‘child’ tables are related in relational database.
Date posted:
April 17, 2019
.
Answers (1)