¶ Abacus is known to be the first mechanical calculating device.
¶ Analytical engine, the first fully-automatic calculating machine,
¶ First Generation of Computers (1942-1955)They were based on vacuum tubes.
• Examples of first generation computers are ENIVAC and UNIVAC-1.
¶ Second Generation Computers (1955-1964) used transistors
The examples of second generation computers are IBM 7094 series, IBM 1400 series and CDC 164 etc.
¶ Third Generation Computers (1964-1975),used the integrated circuits (IC). The first IC was invented and used in 1961. The size of an IC is about ¼ square inch. A single IC chip may contain thousands of transistors. The computer became smaller in size, faster, more reliable and less expensive. The examples of third generation computers are IBM 370, IBM System/360, UNIVAC 1108 and UNIVAC AC 9000 etc
¶ Fourth Generation Computers (1975-Present)Started with the invention of Microprocessor.The Microprocessor contains thousands of ICs. The LSI (Large Scale Integration) circuit and VLSI (Very Large Scale Integration) circuit was designed. The examples of fourth generation computers are Apple Macintosh & IBM PC.
¶ Fifth Generation Computers (Present & Beyond) Scientists are working hard on the 5th
generation computers with quite a few breakthroughs. It is based on the
technique of Artificial Intelligence (AI). Computers can understand spoken words & imitate human reasoning. IBM Watson computer is one example that outsmarts Harvard University Students.
| 1.Vaccuum Tubes | First Generation Computer |
| 2.Transistor | Second Generation Computer |
| 3.ICs | Third Generation Computer |
| 4. VLSI | Fourth Generation Computer |
| 5.ULSI | Fifth Generation Computer |
1. Which of the following are computers that can be carried around easily ?
- A) microcomputer
- B) supercomputer
- C) PCs
- D) Laptops
D) Laptops
2. The basic goal of computer process is to convert
data into
- A) files
- B) information
- C) tables
- D) graphs
B) information
3.A central computer that holds collections of data and programs for many PCs, workstations and other computers is a(n) ——-—
- A) Supercomputers
- B) server
- C) PCs
- D) minicomputers
D) minicomputer
4. A ————- is an electronic device that process data,converting it into information
- A) computer
- B) stylus
- C) processor
- D) case
D) processor
5.Personal computers can be connected together to form a
- A) server
- B) supercomputer
- C) processor
- D) network
D) network
6. Portable computer, also known as laptop computer, weighing between 4 and 10 pounds is called……..
- A) general-purpose application
- B) internet
- C) notebook computer
- D) printer
C) Notebook Computer
7. Ctrl, shift and alt are called _________ keys.
- A) adjustment
- B) modifier
- C) function
- D) alphanumeric
B) modifier
8. Super computer developed by Indian scientists
- A) Param
- B) Compaq Presario
- C) Charls Babbage
- D) Blue Gene
C) Param
9. A computer used at supermarkets, departmental stores and restaurant etc is called ______
- A) P-O-S
- B) Smart
- C) calculating
- D) Dumb
A) P-O-S
10. The first computer which provides storage is
- A) EDSAC
- B) ACE
- C) EDBAC
- D) MARK-I
A) EDSAC
