Engineering Projects

Here, in this article we will discuss about Manchester Code Encoder and Decoder, its key parameters and application. Description of Manchester Code Encoder and Decoder This IC provides both encoding and decoding functions of the Manchester 2 Code used in military and industrial communications systems. It is divided into two sections, the encoder and the decoder, which operate independently of each other, except for the master reset. While specifically designed to meet the requirements of MIL-STD-1553, this IC also can be used for other time-division multiplexed serial data protocols. As…

Read More

In the article “16-Key Encoder Decoder IC” we will discuss about encoder IC for a keyboard, its key parameters, application and comments. Description of 16-Key Encoder Decoder IC This IC provides all the necessary logic to fully encoder a keyboard consisting of 4 x 4 single-pole, single-throw (SWST) switches. An internal debounce circuit is provided which requires only one external capacitor. Provision to eliminate the key “rollover” effect is also included. As illustrated in figure 1 connections are made to the four rows and to the four columns (X and…

Read More

In the article “Excess-3 Gray to Decimal Decoder” we will discuss about its key parameters, application and other details. As illustrated in figure 1(a), this type of decoder has a 4-bit input and a straight decimal output. The 4-bit input, however, is not encoded according to the BCD system but rather according to the excess-3 (gray) code. The difference becomes apparent in the truth table of table 1. This type of code is usually used in special military or industrial applications and is not frequently found in digital computers. In…

Read More

In this article, we will discuss BCD to the decimal decoder and BCD to 7 segment decoder its key parameters, application, and comments. BCD to Decimal Description: This type of decoder is probably the most widely used in all digital systems because it changes the inherent binary codes used within the system to the decimal code used by the human operators. Figure 1 illustrates the function block of a basic BCD-to-decimal decoder. Four input lines represent the decimal numbers 0 through 9. This type of decoder is often used in…

Read More

In this article we will discuss about decoder and encoder IC, its key parameter and its application. Let’s start with its description Description Decoder and Encoder IC Decoders are essentially an arrangement of logic elements that are combined to change from one digital code to another. The term “decoder” is most frequently used but, depending on the point of view, the term “encoder” is equally correct. Figure 1 shows the logic diagram of a 3-bit binary-to-1-of-8 decoder. The inputs A, B, and C can represent any logic function, and the…

Read More