Knitting always involves a lot of counting as you have to keep track how many rows you’ve knitted and how many should follow. This can, of course, be done with pen and paper, but it’s more f... Read more
Contact bounce is an age-old problem with all types of pushbutton switches and keypads that are connected to digital components. The measures that are used to deal with the repeated closing... Read more
Schematic Diagram: Here we are going to make a flip-flop based 4 bit counter. ie it counts 0000-1111 in a binary system. The clock of the first flip-flop is either natural crystal clock or... Read more
Schematic Circuit Diagram: Before explaining the project I am going to tell you one important thing; that is please make a habit of the reading datasheet of particular ic you are using in yo... Read more
This circuit was developed to turn on power supplies in sequence, and then turn them off again in the reverse sequence. This can be helpful for experimenting with equipment and circuits whos... Read more
The subject of stepper motors is clearly very popular, with many reader responses to every published article. A design for a unipolar controller appeared in the May 1999 issue, and now we pr... Read more
Although most petrol-engined w cars and lorries have a counter as standard that is by no means the case in diesel-engined motor vehicles. The reason for this is that, since a diesel engine h... Read more
This compact four-digit digital counter is suitable for any application, such as clocks, frequency meters, digital voltmeter, tachometers, stop-watches, scoreboards, etc. The counter module... Read more
Digital pattern generator: During the construction and testing of digital circuits, there is often a need for an accurately defined bit pattern. The generator described here uses an EPROM to... Read more
PC interrupt handler: The program and the circuit presented here are an introduction to practical interrupt handling in IBM PCs and compatibles, a subject fraught with pitfalls to the averag... Read more
