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FUNCTIONAL USES OF DIGITAL  ICS
Comparator

Fire Controlman Volume 03-Digital Data Systems
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Figure 4-15.—Example of a code converter process to encode and decode data. in figure 4-15. When you depress the “G” on the keyboard, it is encoded, processed, and decoded so a “G” is displayed on the computer’s monitor. DATA ROUTING CIRCUITS. —Data  routing circuits actually route data (the information being processed) inside the computer from various sources to various destinations. Examples in a computer include adders  and  subtracters,  command  signals  (enables), comparators, demultiplexers, selectors, and translators. A few of the uses areas follows: Adder and subtracter circuits —In their simplest form, these circuits are capable of logical (AND, OR, NOT)   operations,   addition,   and   subtraction. Multiplication, division, and square root and the more complicated  calculations,  such  as  hyperbolic  and trigonometric functions, require additional support circuitry such as shift registers and holding registers. Figure  4-16.—Example  of  a  full-adder  circuit. 4-12






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