Everything you need to know about practical interfacing of electronic devices to PCs Suitable for beginners intermediate & advanced users PCs can interface to external devices via many different routes. One of these is by utilising the standard ISA expansion slots a method that is only really suitable for advanced users. However options more suitable for beginners are available that use the parallel & serial ports. All three methods of interfacing are covered in some detail. The use of MIDI games ports for interfacing is also considered. Once connected the PC & external device have to be able to communicate but getting signals in & out of PC ports is not normally a mainstream aspect of programming. Therefore the author covers the necessary techniques using Visual programming languages such as Visual BASIC & Delphi. It is then relatively easy to produce attractive & effective user-interfaces complete with virtual control panels meters etc.