A multivibrator which generates square waves of its own (i.e without any external trigger pulse) is known as astable multivibrator. It is also called free ramming multivibrator. It has no stable state but only two quasi-stable (half-stable) makes oscillating continuosly between these states. Read more about ASTABLE MULTIVIBRATOR
These are resonant circuit or tank circuit oscillators. They are commonly use to produced high frequencies as ranging from I MHz to 500 MHz Hence they are also known as RF oscillators Read more about LC feedback Oscillator
RC oscillators employ resistors and capacitors and are used to generate low or audio-frequency signals. Hence they are also known as audio-frequency (A.F) oscillators. Read more about RC FEEDBACK OSCILLATORS
An oscillator is an electronic device for generating an AC signal voltage. Oscillators generate sinusoidal or non-sinusoidal waveform from very low frequencies up to very high frequencies. Read more about Oscillators
A 555 timer IC is used a a-stable multivibrator as shown in the given figure (A). The threshold input is now connected to the trigger input (Pin 2), the resister R1, R2 and capacitor C1 for timing network which set the frequency of the oscillator.
Certain applications in electronics require that the upper or lower extremity of a wave be fixed at a specific value In such applications ,a clamping/clamper circuits are used. Read more about CLAMPING CIRCUITS
Encoder and Decoder are Used to convert Digital signal to analog and analog signal to digital. Decoder for Digital to Analog and Encoder for Analog To Digital
By converting continuous analog signals into a finite number of discrete states, a process called digitization, then to the extent that the states are sufficiently well separated so that noise does create errors, the resulting digital signals allow the following (slightly idealized):
The speed of microprocessor indicates that how much it is speedy to execute different programes or instructions. There are different points which are involved in a speed of microprocessor which are explained below.
The 8086 microprocessor is available with clock frequency of 5, 8 and 10 megahertz.E.U Execution Unit, Control Circuit, Instruction Decoder, ALU, General Purpose Register, Special Purpose Register, block diagram
A multivibrator which generates square waves of its own (i.e without any external trigger pulse) is known as astable multivibrator. It is also called free ramming multivibrator. It has no stable state but only two quasi-stable (half-stable) makes oscillating continuosly between these states. 
These are resonant circuit or tank circuit oscillators. They are commonly use to produced high frequencies as ranging from I MHz to 500 MHz Hence they are also known as RF oscillators 
