3 Controlled Practice
A. Now look back at your chart in the Listening Section. Where there is a box, indicate T for type and P for part.
B. Now complete the sentences below using the information from your chart. Put one word in each space.
1. A computer's hardware________a CPU and peripheral equipment.
2. Input, output and storage devices are________ ________peripheral equipment.
Storage devices________ ________2 categories — tape or disk.
3. We can________a printer and a VDU ___________output devices.
4. We________ ________software________2 types — custom written and
package.
4 Transfer
PAIRWORK
Student B: Turn to the Key Section.
Student A: Below you will find a chart which describes the ABC Model A computer. Describe it to your partner, who will draw a chart according to the information you give. After your partner has completed the chart, compare your versions.
Student A: Now listen to your partner's description of the ABC model B. Complete the chart below according to the information you hear. After you have completed your chart, compare it with your partner's version.
5 Word Check
EQUIPMENT
hardware — equipment in a computer system
software — programs for a computer system
peripheral equipment — other parts of a computer system (not the CPU), e.g. printer, disk
drive, etc.
central processing unit (CPU) — main part of a computer system
visual display unit (VDU) — computer input/output device with a screen and a keyboard
screen — front of a VDU (or TV) on which you can see information
printer — device which prints information
storage device — equipment on which to record information, e.g. disk drive
keyboard — device, like a typewriter, to input information into a computer
APPLICATIONS
accounts — details of money received and paid out
payroll — total amount of wages to be paid out to employees
wages — payment for work
purchasing — buying
stock control — check on quantity of goods in shop or warehouse
OPERATIONS
to process (information) — to put information into and get information out of a computer
to calculate — to find out something by using numbers
to load — to put information or a program into a computer (from disk or tape)
to multiply — mathematical calculation (symbol X)
to add — mathematical calculation (symbol +)
to subtract — mathematical calculation (symbol —)
to store — to save information for later use, e.g. on disk or tape
unit 3 Optical Fibres
(quantity and amount)
Introduction
This unit deals with a material used for transmitting sound and data: optical fibre. Optical fibre is made of glass and uses light (usually from a laser) to transmit messages.
Listening ------------------------------------------------------------------------------
An engineer is talking to a journalist about the advantages of optical fibre compared with conventional copper cable.
As you listen, match the advantage with its effect(s). The first one has been done for you.
ADVANTAGE EFFECT
1. Higher capacity a. less frequent repeaters
2. Lower material cost b. more security
3. Smaller size с. cheaper to produce
4. Higher quality of transmission d. more information
5. Complete electrical isolation e. less space in ducts
f. less interference/crosstalk