MODULO-20 COUNTER

MODULO-20 COUNTER

Aim: The main aim of this project is to design a modulo-20 Counter.

Block Diagram:

 

DESCRIPTION: 

In digital logic and computing, a counter is a device which stores (and sometimes displays) the number of times a particular event or process has occurred, often in relationship to a clock signal. In practice, there are two types of counters:

• Up counters, which increase (increment) in value
• Down counters, which decrease (decrement) in value

A simple way of implementing the logic for each bit of an modulo-20 counter is for each bit to toggle when all of the less significant bits are at a logic high state. For example, bit 1 toggles when bit 0 is logic high; bit 2 toggles when both bit 1 and bit 0 are logic high; bit 3 toggles when bit 2, bit 1 and bit 0 are all high; and so on up to 10100 after that the bits which are one are made o again after that counting start again from 00000. Like this for evry clock the counter incremented.Synchronous counters can also be implemented with hardware finite state machines, which are more complex but allow for smoother, more stable transitions.

REQUIRED COMPONENTS:

• FPGA
• XILINX ISE

REQUIRED SKILL SET:

• Knowledge on Digital design.
• Knowledge on VHDL programming.