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Digital circuits

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arithmetic logic unit
combinational digital circuit that performs arithmetic and bitwise operations on binary-coded integer numbers
multiplexer
thumb|300px|Schematic of a 2-to-1 multiplexer. It can be equated to a controlled switch. thumb|270px|Schematic of a 1-to-2 demultiplexer. Like a multiplexer, it can be equated to a controlled switch.
multivibrator
A multivibrator is an electronic circuit used to implement a variety of simple two-state devices such as relaxation oscillators, timers, latches and flip-flops. The first multivibrator circuit, the astable multivibrator oscillator, was invented by Henri Abraham and Eugene Bloch during World War I. It consisted of two vacuum tube amplifiers cross-coupled by a resistor-capacitor network. They called their circuit a "multivibrator" because its output waveform was rich in harmonics. A variety of active devices can be used to implement multivibrators that produce similar harmonic-rich wave forms; t
counter
device which stores the number of times a particular event or process has occurred
memory management unit
computer hardware unit having all memory references passed through itself, primarily performing the translation of virtual memory addresses to physical addresses
decoder
device which reverses the operation of an encoder
timer
thumb|A typical kitchen timer
open collector
electrical interface in digital, pulse or power applications where the external load is connected directly to the collector of the switching transistor
signal propagation delay
the length of time taken for a signal to traverse a segment of an electronic or communication network
ring oscillator
type of digital circuit
digital comparator
digital electronic component which compares two binary numbers
binary multiplier
electronic circuit used to multiply binary numbers
barrel shifter
digital circuit that implements a bit-shift operation
ring counter
type of counter
Boolean circuit
model of computation
subtractor
In electronics, a subtractor is a digital circuit that performs subtraction of numbers, and it can be designed using the same approach as that of an adder. The binary subtraction process is summarized below. As with an adder, in the general case of calculations on multi-bit numbers, three bits are involved in performing the subtraction for each bit of the difference: the minuend (X_{i}), subtrahend (Y_{i}), and a borrow in from the previous (less significant) bit order position (B_{i}). The outputs are the difference bit (D_{i}) and borrow bit B_{i+1}. The subtractor is best understood by cons
74181
7400 Series TTL Arithmetic Logic Unit IC
Charlieplexing
thumb|Illustrates how a diagonal array enables nearly twice as many unique intersections as an x/y array.
digital timing diagram
diagram that shows events over time
High impedance
when only a small amount of current is allowed through
Address decoder
type of binary decoder
Time to digital converter
device in signal processing
bit banging
using software instead of dedicated hardware to process and make use of signals
Lookahead carry unit
logical unit in digital circuit design used to decrease calculation time in adder units
priority encoder
digital electronic circuit