Digital Electronics

What is Binary Coded Decimal Number? Binary Coded Decimal number system is system in which decimal numbers from 0 to 9 are represented by four bit binary number. It is often called BCD number system. Each bit of BCD number has a positional weight. The weights are assigned as per the position occupied by these … Read more

2’s complement subtraction method is a way to subtract two binary numbers by actually adding one number with the 2’s complement of another number. In this article, the method of binary subtraction using 2’s complement is elaborated with examples. Method of 2’s Complement Subtraction: To implement this method for subtracting two binary numbers, the very … Read more

1’s complement subtraction is a method to subtract two binary numbers. This method allows subtraction of two binary numbers by addition. The 1’s complement of a binary number can be obtained by replacing all 0 to 1 and all 1 to 0. This article discusses steps involved in 1’s complement subtraction of a smaller number … Read more

This article explains the hexadecimal number system. Method to convert a hex to decimal, decimal to hex, hex to binary and binary to hex has also been elaborated with examples. What is Hexadecimal Number System? Hexadecimal number system is a system which uses 16 digits. Unlike decimal numbering system, this system uses digits 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E &F … Read more

This article explains the Octal Number System. Method to convert decimal to octal and octal to decimal number has also been explained with example. What is Octal Number System? A number system which uses only eight digits viz. 0, 1, 2, 3, 4, 5, 6 to 7 is called Octal Number System. The base or … Read more

To convert binary into decimal, each bit of the binary number is first multiplied with 2(n-1) where n is the position of the particular bit when counted from Least Significant Bit (LSB). The result so obtained are then added to get the equivalent decimal number. We will discuss the entire process / method of converting … Read more

An easy method of converting a decimal number into binary number is by dividing the decimal number by 2 progressively, until the quotient of zero is obtained. The binary number is obtained by taking the remainder after each division in the reverse order. This method to convert decimal number into binary number is popularly known … Read more

A tunnel diode is a diode that exhibits a negative differential impedance region in its I-V characteristic due to quantum tunneling effects. That is, a -sloped region as shown by red colored region in the figure below. It’s a diode, a kind of semiconductor device usually with two terminals. Unlike a regular pn diode, Tunnel … Read more

Twisting the cables is done to remove the electromagnetic interference from the wires. When a signal is transmitted through the cable it is in the form of current. This flow of current produces an electromagnetic field of interference around it and can generate noise effects in the surrounding cables. One pair can induce cross-talk in … Read more

Enhancement Mode MOSFET: For an enhancement MOSFET, the channel does not initially exist. It only comes into existence once a voltage greater than Vth, threshold voltage is applied. For example, in an n-channel MOSFET, the substrate is made of p-type material. Consider the source to be at a reference ground potential of 0 Volts. For … Read more