Explain the terms bit, byte, kilobyte, megabyte, gigabyte and terabyte

bit = a single 0 or 1. Byte = 8 bits 1 Kilobyte = 1024 Bytes 1 Megabyte = 1024 Kilobytes 1 Gigabyte = 1024 Megabytes 1 Terabyte = 1024 Gigabytes

Explain how both positive and negative numbers can be represented in binary using the two’s complement system

The most significant bit (MSB) is used as a sign bit. The MSB is 0 for a positive number. The MSB is 1 for a negative number. For a positive number, place values are used.

Explain what is meant by a character set

A character set is a defined collection of all the letters, numbers, punctuation marks, and symbols that a computer recognises and translates into binary code.

Suggest a use for the eight bit in ASCII

It could be used for error checking as a parity bit It could be used for extended ASCII where it could represent 256 characters.

Benefits of using ASCII over Unicode

ASCII uses fewer bits than Unicode which could result in faster processing/reduced memory requirements.

Benefits of using Unicode over ASCII

Unicode uses 16 bits Unicode can represent 256 times as many characters as ASCII Unicode can represent different languages in one character set

Bits, Bytes & Binary Bootcamp

Revision-style questions and key definitions covering storage units, binary representations (including two’s complement), character sets (ASCII/Unicode), and data quality/validation/verification plus core CPU and memory components.

Quiz title: Bits, Bytes & Binary Bootcamp

Author: Ndillon265

Questions: 30

Sample Questions

Question: Explain the terms bit, byte, kilobyte, megabyte, gigabyte and terabyte

Answer: bit = a single 0 or 1. Byte = 8 bits 1 Kilobyte = 1024 Bytes 1 Megabyte = 1024 Kilobytes 1 Gigabyte = 1024 Megabytes 1 Terabyte = 1024 Gigabytes
Question: Convert the decimal number 39 to binary.

Answer: 0 0 1 0 0 1 1 1
Question: How many different values can be represented using 8 bits?

Answer: 256
Question: Explain how both positive and negative numbers can be represented in binary using the two’s complement system

Answer: The most significant bit (MSB) is used as a sign bit. The MSB is 0 for a positive number. The MSB is 1 for a negative number. For a positive number, place values are used.
Question: How many positive decimal numbers can be represented using an 8 bit two’s complement system?

Answer: 127
Question: How many negative decimal numbers can be represented using an 8 bit two’s complement system?

Answer: 128
Question: Explain what is meant by a character set

Answer: A character set is a defined collection of all the letters, numbers, punctuation marks, and symbols that a computer recognises and translates into binary code.
Question: Suggest a use for the eight bit in ASCII

Answer: It could be used for error checking as a parity bit It could be used for extended ASCII where it could represent 256 characters.
Question: Benefits of using ASCII over Unicode

Answer: ASCII uses fewer bits than Unicode which could result in faster processing/reduced memory requirements.
Question: Benefits of using Unicode over ASCII

Answer: Unicode uses 16 bits Unicode can represent 256 times as many characters as ASCII Unicode can represent different languages in one character set

Bits, Bytes & Binary Bootcamp

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