Code Converters in VHDL.

The availability of a large variety of codes for the same discrete elements of information results in the use of different codes by different digital systems. It is sometimes necessary to use the output of one system as the input of another. A conversion circuit is inserted in between the two systems if each uses... Continue Reading →

4 BIT ALU using VHDL

In this blog post, we will be learning about logical and arithmetic operators using a system design approach in VHDL. An Arithmetic and Logic Unit is a digital circuit which performs arithmetic, logical and shift operations. It is the fundamental building block of central processing unit (CPU). Let us design a simple ALU using some... Continue Reading →

VHDL : Important terms.

These are the basic VHDL building blocks that are used in almost every description. ■ Entity : All designs are expressed in terms of entities. An entity is the most fundamental building block in a design.  ■ Architecture : All entities which can be simulated have an architecture description. An architecture describes the behavior of the entity.... Continue Reading →

An Introduction to VHDL

  VHDL is an acronym for Very high speed integrated circuit (VHSIC) Hardware Description Language. It is a programming language that describes a logic circuit as follows:- (i) Function (ii) Data flow behavior (iii) And/or structure This hardware description is used to configure a programmable logic device (PLD), such as a field programmable gate array (FPGA) with a custom logic design. The general format... Continue Reading →

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