Question

extboOK. Review of Essential Terms and Concepts, Page 116: 2. Explain how the terms bit, byte, nibble, and word are related. 7. What does overflow mean in the context of unsigned numbers?

Answer 1

As in the computer language all the data is store in the binary code.For human convenient we classified the binary number in different form belongs to their length.

For example,

Bit: It is the smallest binary number from all of the types it can only represents 0 and 1.So the length of the bit is 1.

Byte:Byte is having length 8.It is representing using 8 0 and 1's number.Byte is combination of 8 bit that means there are 8 bits are required to complete byte.

Nibble: Nibble is represent using 4 bits.Thats means combination of two nibble is the byte and combination of 4 nibble make the word.

Word: Word is having length 16. that is word is represent using 16 bits or it can represent using 2 bytes or it can represent using 4 nibble.

Relation:

1 byte = 8 bits or 2 nibbles

1 nibble = 4 bits

1 word = 16 bits or 2 bytes or 4 nibbles

Ans 2nd:

If the carry out after the addition of two unsigned numbers then it is said to be the overflow.

for example.,

suppose the addition of 10+11

then in binary form,

10 = 1010

11 = 1011

1010

+ 1011

-------------

1  0101

in this the out put generated with the carry but we are only considering 4 bit of answer so we could say that the answer is overflow.