COMPUTER FUNDAMENTALS

COMPUTER HARDWARE

COMPUTER MEMORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Byte can hold ____ different values
A
64
B
128
C
256
D
None of the above
Explanation: 

Detailed explanation-1: -A byte is an eight-bit, two’s complement integer that ranges from-128 to 127. Note that like all numeric data types in Java, a byte is signed. The maximum byte value is 127. 128, 129, and so on through 255 are not legal values for bytes.

Detailed explanation-2: -byte: The byte data type is an 8-bit signed two’s complement integer. It has a minimum value of-128 and a maximum value of 127 (inclusive).

Detailed explanation-3: -byte data type This is an example of a primitive data type. It is an 8-bit signed two’s complement integer. It stores whole numbers that lie between-128 to 127. A byte data type is helpful for saving memory in large amounts.

Detailed explanation-4: -This is because we have to represent the number 0, so inclusively 0-127 is the other 128 possibilities of our range. If we were only allowing positive values, such as an unsigned byte where negative numbers aren’t possible, the range would be 0-255, since these are 256 different values (including the 0).

Detailed explanation-5: -A byte is a group of 8 bits. A bit is the most basic unit and can be either 1 or 0. A byte is not just 8 values between 0 and 1, but 256 (28) different combinations (rather permutations) ranging from 00000000 via e.g. 01010101 to 11111111 . Thus, one byte can represent a decimal number between 0(00) and 255.

There is 1 question to complete.