Chapter 3 Number and Character Coding Systems

How many bits are there for 3 bytes?

• 3 bits

• 8 bits

• 24 bits

• 30 bits

A special computer uses ASCII coding system to store a character. How many bytes of computer storage is needed for the string 'joyful'?

• 6 bytes

• 12 bytes

• 48 bytes

• 96 bytes

The display card of a computer uses 24 bits to represent the color of a pixel. How many possible colors can be displayed?

• 3

• 24

• 2¹⁶

• 2²⁴

Which of the following coding system is/are used to represent Chinese characters?

• Big-5 code

• GB code

• Unicode

• ASCII code

Which of the following characters are not included in the ASCII table?

• alphanumeric characters

• punctuation marks

• control characters

• Chinese characters

A byte is a group of

• 4 bits

• 8 bits

• ASCII characters

• memory locations

In Big5 coding system, ___ bytes are used to represent one Chinese character.

• 1

• 2

• 8

• 16

The one's complement of the binary code 101010 is

• 010101

• 010110

• 010111

• 011110

The following data received during a data transmission using odd parity system. Which of them is/are INVALID?

• 1010 1000

• 1001 0011

• 0001 1111

Why are two bytes used to represent a Chinese character?

• Most Chinese characters are composed of two parts.

• The display size of a Chinese character on screen is usually twice that of an alphanumeric character.

• Two bytes have sufficient combinations to represent all Chinese characters.

• Some Chinese applications software is designed for 16-bit computers.