Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
It depends on what you are driving, but it is done for security reasons, you don't want to loose a port on your PC for a short or mistake on the other side. If you try to pull to much current out of the port you will damage it. So to avoid those problems you use a chip. Yes you could use transistors, but by the time you have all the biasing components for all the lines in the parallel port, you use a lot of space and time putting in together. Why not just use a chip instead? There are plenty more chips that can be used instead of the 74ls374 it is all upto you.
we're planning to use a PIPO register made of D FF as the ICs connected to the parallel port. the outputs of this are connected to a transistor. the transistors are the one connected to the equipments we are planning to control.
we're planning to use a PIPO register made of D FF as the ICs connected to the parallel port. the outputs of this are connected to transistors. The transistors are the one connected to the equipments we are planning to control.
BSOD is blue screen of death. This happens wen you eject a floppy disk while it is being read, microsoft displays this blue screen. Theres other ways to get a BSOD but yeah...
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