Translate these paragraph number 2,4 and 5 into English

1. Experts in computer science deal 
with__
3. Finish these sentences:
a) manufacturing cars;
b)computer-aided-design;
c) increasing the productivities of car.
2. One o f the aims of using 
computers is ....
3. Simple devices can do....
4. Complex computers perform....
a) to work out up-to-date demands;
b) to shorten the time between 
designing and 
manufacturing;
c) To construct hardware.
a) logical operations;
b) such operations as 
addition, subtraction,
Multiplication and division.
5. High-level programming languages a) BASIC, FORTRAN;
are .... 
d) Assembly and machine languages.
UNIT 2 
Read the text
1. Computer can perform many functions: they can do mathematical and 
logical operations, mathematical operations including arithmetic and 
algebraic operations, such as addition, multiplication and division, rising to 
a power, differentiating and integrating. Logical operations include 
comparing, 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 microcomputers are personal 
computers. At present personal computers have become so powerful that 
they are used as CAD/CAM systems.
4. A microprocessor is very small device used in microcomputers, which 
deals with memories by reading and writing process. Microprocessor can 
obtain from memory and execute a limited set of instructions in order to
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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 units, hard disks and floppy disks being 
widely used. Floppy disks (flexible plastic disks) are used in personal 
computers.

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