Vocabulary practice Section 3. 1. Fill in the blanks with the correct units of memory. 1

1. Fill in the blanks with the correct units of memory.

1. One ……. represents one character. 2. One ……. represents 1024 characters (about a small page of text). 3. One ……. represents about one million characters (about the text of a small book).

4. One ……. represents about 1 000 000 000 characters (about 1000 books).

5. One ……. represents about 1 000 000 000 000 characters (about one million books in a big library).

2. The table gives some prefixes commonly used in computer science. Knowing the meaning of these prefixes will help you understand new words.

Prefix	Meaning	Examples
deci- hexadeci- kilo- mega- giga- mini- micro- bi- tri- multi- mono-	ten sixteen one thousand (1,000) (1,024 in binary: 2¹º) 210) large; one million very large; one thousand million small very small two three many one	decimal, decimalize, decibel hexadecimal kilocycle, kilogram(me), kilowatt megahertz, megalith, megaton gigabyte, gigahertz minibus, minimum, minimize microfilm, microphone, microwave bidirectional, bidimensional, binary tripartite, tricycle, trilingual multi-racial, multi-user; multitasking monologue, monolingual

Explain these expressions, taking into account the prefixes and root word.

Example: the binary system - The binary system is a notation which uses two digits, 0 and 1.

a minicomputer a microcomputer the decimal system

the hexadecimal system a multi-user configuration a bidimensional chessboard a tricycle

a monochrome computer display a CPU with 256 MB of RAM a document of 3 kilobytes

3. Complete these sentences by inserting a unit of memory.

1. A ……. is the smallest unit of information in a computer that must be either 0 or 1. Eight of these make a …….
2. A ……. is approximately one million bytes.
3. One of the largest units of memory is a ……. – equivalent to all the books in a large library.
4. A DVD-RW can usually store 4.7 ……. of data.
5. A ……. is around 1000 bytes.

Дата добавления: 2014-12-27