Types of software: I. System software II. Applications software
Give English equivalents: разработчик developer оборудование equipment безопасность security загружать to boot вместимость памяти memory capacity управлять to handle обеспечивать чем-либо to provide браузер Web-browser
II. True or false? Read the following statements and write T if the statement is true, F if the statement is false. 1.Computer programs only instruct hardware how to handle data storage. 2. System software controls internal computer activities. 3.System software is very dependable on the type of application software being used. 4.The driver is a special device usually used by car drivers for Floppy-disk driving. 5.It is very reasonable to ask for a driver when you buy a new piece of hardware. 6.Software developers try to make their products very small and with poor interface to save computer resources.
Check yourself: 1- T 2 - T 3 - T 4 - F 5 - T 6 - F
Functions of computers Grammar: The Present Perfect Tense.
Write and learn new words: addition - сложение subtraction - вычитание multiplication - умножение division - деление raising to a power – возведение в степень to compare - сравнивать to be divided into – делиться на to contain - содержать Random Access Memory (RAM) – память с произвольной выборкой Read Only Memory (ROM) – постоянная память
Match the columns: 1. mainframe 2. execute 3. to obtain 4. set of instructions 5. hard disk 6. floppy disk 7. to input data 8. to output data 9. Random access memory 10. Read Only memory 11. Program storage 12. printed board a.гибкий диск b.получать данные на выходе c.печатная плата d.память с произвольной выборкой e.жёсткий диск f.набор инструкций g.исполнять (команду) h.память для хранения программ i.получить добиться j.(универсальная) вычислительная машина k.вводить данные l.постоянная память
Match the columns (keys): 1. J 2. G 3. I 4. F 5. E 6. A 7. K 8. B 9. D 10. L 11. H 12. С
Read and translate the text: Functions of computers. 1. Computer can perform many functions: they can do mathematical and logical operations, mathematical operations including arithmetic and algebraic operations, such as addition, subtraction, multiplication and division, raising to a power, selecting, sorting and matching. 2. Computers are divided into four main classes: microcomputers, minicomputers, mainframes and supercomputers. 3. A minicomputer is a computer manufactured on a single printed board which contains one or more chips. Most computers are personal computers. At present personal computers have become so powerful that they are used as CAD/ CAM systems.
4. A microprocessor is a very small device used in microcomputers, which deals with memories by reading and writing process. Microprocessors can obtain from memory and execute a limited set of instructions in order to perform addition or subtraction on a binary word and to input or output binary data. 5. Memory is a device for storing digital information. Memory should be small in size and large in capacity. It should take little power and work at the same speed as computer logic. There are many types of memories. All microcomputers use Random Access Memory (RAM) and Read Only Memory (ROM). 6. RAM is called so because information can be put into or out of any single byte of memory. ROM is permanent memory for program storage. 7. People know many types of memory units, hard disks and floppy disks being widely used. Floppy disks (flexible plastic disks) are used in personal computers.
Complete the following sentences: 1. Computers are divided into four main classes: … 2. A minicomputer is … 3. A microprocessor is … 4. Memory is … 5. ROM is … 6. Floppy disks are used …