JK Flip-Flop – PRESET & CLEAR Inputs – Truth Table

The JK Flip-Flop is a sequential device with 3 inputs (J, K, CLK (clock signal)) and 2 outputs (Q and Q’). J and K are control inputs.

XOR logic gate

In digital electronics there are special gates. One of them is the XOR logic gate or exclusive OR gate. Equivalent XOR Logic Gate using common logic gates

NOR logic gate

A NOR logic gate can be implemented with the concatenation of an OR gate and a NOT gate. NOT gate using a NOR gate

Binary to Gray Code Conversion and Gray code to Binary Conversion.

Two Methods. One method to convert from binary to gray code and another to convert from gray to binary code

NAND Gate – Truth table.

Truth tables for the NAND gate.

NOT gate made of a NAND gate

The Gray code is a special type of binary code that is unweighted (the digits that make up the code does not have an assigned weight).

Its characteristic is that between a combination of digits and the next, whether upstream or downstream, there is only a difference of one digit.

Aiken code – Excess 3 code

Aiken BCD code is similar to the natural BCD code, but with “weights” or “values” distributed differently.

The Excess 3 Code is obtained by adding “3” to each combination of the natural BCD code.

The binary number system

The binary number system. unlike the Decimal number System, where they are allowed 10 digits (0 to 9), you only need two (2) digits: “0” and “1”.

Boolean Algebra – Introduction and Rules.

Boolean Algebra is a tool to reduce logical expressions. It is the mathematics of logical expressions, which was presented by George Boole in 1854.

What is a Binary Decoder?

The binary decoder is a device that accepts a digital input (in binary form) and it activates one of its outputs. This device has several outputs, and the one that is activated is chosen by the code applied to the inputs.

BCD Code In order to share information in digital format, it is common to use a binary or hexadecimal representations (BCD Code). There are other methods to represent this information and one of them is the BCD code. By using the BCD coding is easy to see the relationship between a decimal number (base 10) and the corresponding […]

What is a Sequential circuit? The main difference between a combinational circuit and a sequential circuit is that in the sequential circuit there is a feedback from one or more of the outputs to one or more of the inputs. You can see that the output of the OR gate is feedbacked to the input of the lower AND gate. This means that the […]