Topic 1.2(b)(c) - Lecture

Which of the following is/are the advantage(s) of using binary numbers rather than decimal numbers in a computer system?

You may choose more than one answer.

• Faster execution because binary number (ie: 101012) is a machine language that a computer can understand

• Provide simplicity (two clearly distinct state: T/F or O/1)

• Easy to design circuit because uses fewer arithmetic rules

• Less amount of space (use less memory)

How computer represents data?

• By using bit - The smallest unit of data a computer can process that consists of 1 or 0.

• By using bit - A group of 8 bits to represent a character.

• By using byte - A group of 8 bits to represent a character.

• By using byte - The smallest unit of data a computer can process that consists of 1 or 0.

Define number system.

• A numbering system that represents all numbers using 10 symbols.

• A numbering system is a

  way of representing numbers.

• A system that represents all numbers using just two symbols.

• A numbering system that uses 16 different symbols.

Which of the following is not types of numbering systems.

• Decimal number system

• Binary number system

• Dual number system

• Hexadecimal number system

A programmer prefers to use a hexadecimal number system compared to binary number system. Justify why.

You may choose more than one answer.

• It can represent binary values in a more compact and readable form

• The conversion between the binary and the hexadecimal number system is very efficient

• Hexadecimal notation is a shorthand method for representing the binary digits stored in a computer

• Provide simplicity - two clearly distinct logic states (0 or 1 or on or off)

Digital data is represented by using (a)   ​(binary digit 0 (off) and 1(on)) and ​ (b)   ​ . Byte is a group of ​ (c)   ​ ​ to represent a ​ (d)  

• bit
• byte
• 8 bits
• character
• code

Give one (1) example of a combination of bits that represent a byte.

• 100001110

• 11111111

• 12145379

• 10AFBDC1

What is the hexadecimal number system? ​

• Is the numbering system that represents all numbers using 8 symbols

• Is the number system that represents all numbers using just two symbols

• Is the numbering system that uses 16 different symbols

• Is the numbering system that represents all numbers using 10 symbols

What is the binary number system? ​

• Is the numbering system that represents all numbers using 8 symbols

• Is the number system that represents all numbers using just two symbols

• Is the numbering system that uses 16 different symbols

• Is the numbering system that represents all numbers using 10 symbols

Which of the following is not the hexadecimal symbol​ ?​ ​ (a)   ​​ ​

• G
• 0
• D
• E
• F