What is called a two's complement. A computer cannot store negative values (non-positive logical values don't exist in binary logic), so it transforms the value into its "positive complement", which can be stored and acted upon.
computers, calculators
The first bit is used for sign, 0 means its positive and 1 means its negative. Normally a single byte can store 256 values (0-255). But stealing a bit means it can store only 128 now (0-127). But it's really storing 256 values since its rane is now -127 to 127.
Numbers do not really exist, they just represent things in reality Numbers are conceptual, and only exist within brains and computers to relate amounts of things to one another
• digital computers work on discrete data representing quantities by encoding (e.g. integers, coded alphanumeric characters, coded floatingpoint numbers). • analog computers work on continuous data representing quantities by analogy (e.g. voltages, currents, shaft rotation rate, shaft position). • hybrid computers are a combination of digital & analog computers connected together to work as one machine.
The product of three negative numbers is negative.
They will be negative numbers as for example -5+(-7) = -12
It doesn't. EBCDIC is a code for encoding characters, not numbers. Of course you can store numbers in an alphanumeric variable, in which case you would use the minus sign for a negative number; but usually, numbers are stored in a more compact format. For example, 2's complement is commonly used to store integers.
No. Whole numbers are counting numbers and zero.
The product of three negative numbers is negative.
Where do we see negative numbers
Yes, the mean of a set of negative numbers is always negative. The mean is calculated by summing all the numbers and then dividing by the count of numbers. Since all the numbers in the set are negative, their sum will also be negative, resulting in a negative mean.
Mainframe computers primarily use the EBCDIC (Extended Binary Coded Decimal Interchange Code) coding scheme for representing characters. EBCDIC is an 8-bit character encoding system developed by IBM, which differs from the more common ASCII encoding used in many other computing systems. This coding scheme supports a variety of character sets, including letters, numbers, and special symbols, catering to mainframe applications and legacy systems.