Презентация к уроку по теме "Computer technology"

COMPUTER COMPONENTS

TASK 1. Match the words with their definitions

To perforеm 1.включать в себя

Device 1.”железо”, аппаратура

To execute 2.видоизменять

Related 1.постоянный

Storage 2. блок управления

To accept 3.выполнять, совершать

Internal 2. связанный

Elaboration 3.устройство

To process 4.хранить

Volatile 3.внутренний

Hardware 4. содержимое, содержание

To store 5.обрабатывать

To comprise 6. осуществлять

Nonvolatile 4.значимый, существенный

Software 5. оперативная память

Essential 5.энергонезависимый

Peripheral 6.хранение, хранилище

To modify 7.принимать

Permanent 6.энергозависимый

Input (output) device 7. разработка

ALU 8.программное обеспечение

Control Unit 9. объем, вместимость

Content 10. устройство ввода и вывода

RAM 11 блок арифмет.-логических операций

Capacity 12.периферийное устройство

A computer is an electronic device that performs high-speed mathematical or logical operations and executes

instructions in a program . Its main functions are to accept and process data to produce results, store

information and programs and show results.

The main characteristics of these powerful machines are:

• speed, as they can execute billions of operations per second

• high reliability in the elaboration and delivery of data

• storage of huge amounts of information

A computer consists of hardware and software. The word hardware refers to all the components you can

physically see such as the CPU (Central Processing Unit), the internal memory system, the mass storage

system, the peripherals (input and output devices) and the connecting system. Software, instead , comprises

all the computer programs and related data that provide the instructions for a computer to work properly.

The CPU is the brains of your computer and consists of ALU (Arithmetic Logic Unit), which carries out the

instructions of a program to perform arithmetical and logical operations, and CU (Control Unit), which controls

the system and coordinates all the operations. In order to memorise input and output data, there is an internal

memory that can be distinguished into volatile and non-volatile. Volatile memory is memory that loses its

contents when the computer or hardware device is off. Computer RAM (Random Access Memory) is a good

example of volatile memory. It is the main memory of the computer where all data ca n be stored as long as

the machine is on. On the contrary, a non-volatile memory contains information, data and programs that

cannot be modified , or can be modified only very slowly and with difficulty. Computer ROM (Read Only

Memory), for example, contains essential and permanent information and software which allow the computer

to work properly. Memory storage devices are available in different options, sizes and capacities. These

devices are extremely useful; they can be rewritten and offer incredible storage capacity, up to 256 GB. They

can be magnetic (hard disks), optical (COs and OVOs) or solid (flash memory cards).

Task 2: TRUE or FALSE

• 1. A computer is software.
• 2.A computer performs only logical operations.
• 3.A computer gives commands.
• 4. The main function of a computer is to process data.
• 5. The main characteristics are speed? Reliability and storage.
• 6. A computer consists of software and hardware.
• 7. The hardware is the peripherals.
• 8. The software comprises all computer programs.
• 9. The CPU consists of ALU and CU.
• 10.The internal memory can be only volatile.

Answer the questions :

• 1.What is a computer?
• 2.What operations does it perform?
• 3.What is the main function of a computer?
• 4.What are the main characteristics of a computer?
• 5.What does a computer consist of?
• 6.What is hardware?
• 7.What is software?
• 8.What is the brains of a computer?
• 9.What types of internal memory are there?
• 10.Why are memory storage devices very useful?