It is extremely common for digital computers to use the binary system. Computers represent values using two voltage levels. Using the values of zero and one, computer makers represent these two levels of voltage. All of the tasks that a computer perform, are simply manipulations of numbers that have been converted to the binary system, and are represented by the voltages. In order to represent negative numbers, the last (left-most) bit is reserved to indicate the sign of the number. Binary logic also uses these two digits in its system. The binary system was chosen in computer checks the bit value by using current. With a binary system only the presence or absence of the current needs to be checked in order to obtain an outcome processes possibilities or respondence to a command, while with a decimal system, ten different current intensities would need to be checked in order to obtain an outcome.

The word digital has become synonymous with the word binary, because computers are and were always familiarized by most people as process information coded as combinations of binary digits. Something is considered digitized when there is a conversion of any analog or other continuo

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