Logic Gates

BOOLEAN CONSTANTS AND VARIABLES Boolean algebra differs in a major way from ordinary algebra because Boolean constants and variables are allowed to have only two possible Read More »

Codes and Parity

BINARY CODES In the coding, when numbers, letters or words are represented by a specific group of symbols, it is said that the number, letter Read More »

Arithmetic Circuits

1 BINARY ADDERS One of the most important tasks performed by a digital computer is the operation of adding two binary numbers.   The simplified Read More »


As its name indicates, a decoder is a circuit component that decodes an input code. Given a binary code of n-bits, a decoder will tell which Read More »


Counting is frequently required in digital computers and other digital systems to record the number of events occurring in a specified interval of time. Normally Read More »

Shift Register

REGISTERS A register is a group of binary storage cells capable of holding binary information. A group of flip-flops constitutes a register, since each flip-flop can Read More »


READ-ONLY MEMORY (ROM) A read-only memory (ROM) is a device that includes both the decoder and the OR gates within a single IC package. The connections Read More »

A/D and D/A converters

What is ADC ? An electronic integrated circuit which transforms a signal from analog (continuous) to digital (discrete) form. Analog signals are directly measurable quantities. Digital Read More »

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