- Why is a byte 255 and not 256?
- What is eight bits of data called quizlet?
- Why there are 8 bits in a byte?
- Is a byte always 8 bits?
- Which number Cannot be represented by eight bits of data?
- Which number Cannot be represented by eight bits of data quizlet?
- Is ascii 7 bit or 8 bit?
- Why is computer memory in multiples of 8?
- What is the meaning of 8 bit?
- What are 4 bits called?
- Which is the smallest unit of memory?

## Why is a byte 255 and not 256?

A byte has only 8 bits.

A bit is a binary digit.

So a byte can hold 2 (binary) ^ 8 numbers ranging from 0 to 2^8-1 = 255.

It’s the same as asking why a 3 digit decimal number can represent values 0 through 999, which is answered in the same manner (10^3 – 1)..

## What is eight bits of data called quizlet?

A group of 8 bits is known as a. byte.

## Why there are 8 bits in a byte?

The byte was originally the smallest number of bits that could hold a single character (I assume standard ASCII). We still use ASCII standard, so 8 bits per character is still relevant.

## Is a byte always 8 bits?

3 Answers. Yes, a byte is always 8 bits in modern computing. In the book, the word and the size of the word is explicitly mentioned, while there is not a word (haha) about bytes. … The whole size is expressed in (16 bit) words rather than bytes.

## Which number Cannot be represented by eight bits of data?

128A non-zero integer and its negative can’t both be represented by the same pattern. So +128 can not be represented in eight bits.

## Which number Cannot be represented by eight bits of data quizlet?

Which number cannot be represented by eight bits of data? 436; Eight bits of data, or a single octet, can represent all decimal numbers from 0-255. 436 is beyond this limit.

## Is ascii 7 bit or 8 bit?

ASCII uses 8 bits to represent a character. However, one of the bits is a parity bit. This is used to perform a parity check (a form of error checking). This uses up one bit, so ASCII represents 128 characters (the equivalent of 7 bits) with 8 bits rather than 256.

## Why is computer memory in multiples of 8?

Because the industry settled on grouping 8 bits and calling it a byte, and a lot of systems have a data word size of a byte. Resulting in a more efficient system when data words are multiples of 8.

## What is the meaning of 8 bit?

In computer architecture, 8-bit integers, memory addresses, or other data units are those that are 8 bits (1 octet or 1 Byte) wide. … 8-bit is also a generation of microcomputers in which 8-bit microprocessors were the norm. Mainly we can consider 8-bit microprocessor means 8-bit data or information bus.

## What are 4 bits called?

nibbleIn computing, a nibble (occasionally nybble or nyble to match the spelling of byte) is a four-bit aggregation, or half an octet. It is also known as half-byte or tetrade. In a networking or telecommunication context, the nibble is often called a semi-octet, quadbit, or quartet.

## Which is the smallest unit of memory?

These binary digits are known as bits, and are the smallest possible unit for data storage. When 8 bits are combined, you get a byte. Bytes are used to store a single character; whether’s it a letter, number, or punctuation.