Decimal D

Binary B

Hexadecimal H and Octal O

Original code

reverse code

complement

BCD code

Gray code

ASCII code

AND operation---L=A*B

Or operation---L=A B

Not operation---L=A inverse

truth table

logical function expression

logic diagram

Waveform graph

The law of self-conformity, the law of 0-1, the law of overlap, the law of complementarity, the law of reduction, the law of commutability, the law of association, the law of distribution, the law of absorption, the law of inversion

Substitution rules, inversion rules, duality rules, Shannon expansion theorem

AND-OR expression, OR-AND expression

Minimum term expression, maximum term expression

After the same signal is transmitted through different paths, it reaches a certain meeting point in the circuit at different times. This phenomenon is called logical competition, and the resulting output interference pulse is called risk.

Add a product term to avoid adding complementary terms, and connect a capacitor in parallel at the output

Encoder

decoder

data selector

Numeric comparator

arithmetic operation circuit

A unit circuit that has two logic states of 0 and 1. Once it enters one of the states, it can remain unchanged for a long time.

NOR gate, NAND gate

D flip-flop

JK flip-flop

T flip-flop

SR flip-flop

Millie type sequential circuit Moore type sequential circuit

1. Write a system of logic equations 2. Draw a state transition table 3. Draw a state transition diagram 4. Draw a timing diagram

1. Establish the original state transition diagram and the original state transition table from the given logic function 2. State simplification 3. State allocation 4. Select the trigger type 5. Determine the excitation equation set and the output equation set 6. Draw the logic diagram and Check self-correction capabilities

1. List each logic equation group 2. List the state transition table 3. Draw the state transition diagram and timing diagram 4. Logic function analysis

Registers and shift registers

counter

ROM

RAM

Non-repetitive triggering-----can only accept trigger signals in steady state

Repeatable triggering-------During the transient steady state, the circuit can accept a new trigger signal and restart the transient steady state process.