meeting 1_what is a computer [compatibility mode]

7/27/2019 Meeting 1_What is a Computer [Compatibility Mode]

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BAHASA INGGRIS IIBAHASA INGGRIS IIBAHASA INGGRIS IIBAHASA INGGRIS II

ENGLISH FOR COMPUTERENGLISH FOR COMPUTERENGLISH FOR COMPUTERENGLISH FOR COMPUTER



Meeting 1

What is a computer?



Computer is a machine that can acceptdata and process it according to a stored

program of instructions and then give theresult via output devices. An electronicsymbol-manipulating system that’s

designed and organized to automaticallyaccept and store input data, process them,and produce output results under the

direction of detailed step-by-step storedprogram of instructions.



How a computer works can be explainedwith this simple block diagram:

InputProcess

Output

+ 9

Storage



For example you input any data usinginput devices, 5 + 4. Then this data will be

processed in a computer. This process willbe held by a device called processor. Afterthe process is completed, the result will be

. ,computer needs to save the process for aparticular need. For example for further

use in the future. In this case the computerwill save the process to a device calledstorage. That’s the way computer works.



Task 1Find the synonym from the passage (Slide 2 - 4)which mean the same as:

1. Keep/save : _________________ 2. Through : _________________

3. Commands : _________________

. _________________

5. Arranged : _________________

6. Instruments : _________________

7. Very definite : _________________

8. As stated by : _________________ 9. Finished : _________________

10. Necessity : _________________



Now have a look at all devices in thatprocess. First one is input device. There

are many kinds of input devices. The mostcommonly used is keyboard. Others are

, , , ,camera (for example webcam), etc. Wecan say that input device is any kinds of

devices that can be used to input any datato a computer.



The second device is the processor.This is the brain of the computer which

holds all data processing in a computer.The processor is created based onsemiconductor material like Germanium

(Ge) and Silicon (Si). The form ofprocessor was not like the form we see theprocessor nowadays. There are evolutionin creating a processor until we get theform of processor today.



For the first time, computer used vacuumtube, an electronic device to hold computation.Vacuum tube is in big size. And one computer

may consist of tens even hundreds of vacuumtube. That’s why it is no wonder if the firstgeneration of computer may have a very big sizelike a house.

The second generation of computer beganwith the invention of transistor to replace theuse of vacuum tube. The effect of this invention

is the reduce on the size of computer. The sizeof transistor may be like a peanut-size. That’swhy there is a significant reduce in the size ofcomputer.



The next generation is the use of IntegratedCircuit (IC) to replace transistor. One IC may

consist of thousands of transistor. Finally the ICalso gets evolution into VLSI which consists ofthousands of IC. That’s about the processor.

e t r ev ce s ou pu ev ce. utputdevice is any device that can produceinformation as the result of computer process.

This information can be displayed in a monitor,or can be listened via speaker, or can be readsuch as in printing form like paper.



Recently there are two kinds of monitor, thefirst is CRT monitor which is use electronic tube

that’s why the size is big. The second is LCD.

LCD has slim form since it has flat monitor, thetechnology that is used also for notebook and

laptop.

The last device is storage. Actually thisdevice is used to store or save any information

from a processor. The most common of storage

device are hard disk, flash disk, floppy disk, CD-ROM (optical disk), magnetic tape, etc.



The use of computer in daily activities

Recently computers are used by people for the

following purposes:1. Data Processing. Computers are used in

financial and commercial works such as billing,

nventory contro , etc.2. Scientific Processing. Computers are used to

support science such as nuclear engineering,mathematic, etc.

3. Multimedia. Examples in this area are forcomposing music, creating film animation,editing film and video, etc.



Task 2Show whether the followings statementsare true or false (T/F) from Slide 6 - 11.

1. Any kind of instruments that can be used to putany data into a computer is input device.

2. The form of processor is always the same.

3. The first generation computer used manyvacuum tubes.

4. Today’s processor is using transistor to

replace vacuum tubes.

5. CRD technology is not used for notebook.



Computer Terms

CRT(Cathode Ray Tube)

LCD(Liquid Crystal Display)

Vacuum tube



Vacuum tube

Is an electronic device thatuses glass tube to house electronic

circuits. The working of which aredependent on the vacuum withinthe tube. Later, this device wasreplaced by transistor.

ENIAC vacuum tube.Integrated CircuitThis is the furtherdevelopment of transistor.Consisting hundreds oftransistor in each which

makes computation faster.



TransistorIs a semiconductor device

and close a circuit. In digitalcomputers, it functions as anelectronic bridges the gapbetween two wires and allowscurrent fo flow. This device wasinvented by William Schockley,Walten Brattain, and JohnBarden. This device has threefeet namely the basis, theemittor, and the collector.

(Very Large Scale Integration)Is the packing of hundredsof thousands of electroniccomponents on a single

semiconductor chip.



Further Reading

• http://en.wikipedia.org/wiki/Computer

• http://en.wikipedia.org/wiki/Integrated_circuit• http://www.google.co.id/search?hl=id&defl=en&q

= = = _

&ct=title

• http://www.osdata.com/system/physical/basics.h

tm

• http://inventors.about.com/library/blcoindex.htm



Send answer via sms to 8181

Choose a, b, c, or d for the correct answer.

1. Nowadays computer is used for thefollowing purposes, except ….

a. mu t me ab. scientific processing

c. data processing

d. none of the above



2. The most commonly used input device is ….

a. keyboard c. joystick

b. webcam d. mouse

3. A house size com uter is … com uter.

a. the second generation

b. the first generation

c. the new generationd. the third generation



4. This is a picture of ….

a. transistor c. vacuum tube

b. VLSI d. IC

. n orma on can e s ores n a s or ngdevice such as ….

a. CD-ROM (optical disk) c. monitor

b. track ball d. printer

meeting 1_what is a computer [compatibility mode]

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