Personally, I would have no problems in going back to the days when transistors had three legs and a tin hat, and you had to look up a data sheet to tell which of the legs was the base, and which was the collector.
So it shows how far we have come in such a short time, as now we can touch the processor, and it just feels a little hot. Assuming 15 mW for each transistor, the total power would be 300 kW, which is equivalent to the heat given of by 3000 100 W light builds, or 300 1 kW heaters. Image the heat that would have been generated. Image the size of the bin that would have been required if someone had had build a Pentium processor from the discrete transistors (over 20 million of them). They normally work first time, they’re easy to connect to, and when they don’t work you just throw them in the bin. These days with massively integrated circuits, it is difficult to know one end of a microchip from another. Sometimes the circuits blew-up, or times they would stop working, but at least you knew where you were with the electronics. In the past, especially in the 1970s and 1980s, electronic engineers used breadboards and wires to prototypes circuits. Some of us like doing databases, some like writing user-interfaces, but there are lots who like to make computers sense things and make physical things happen. I remember a third year student commented: ‘I’ve been programming for three years, and finally, we’re doing something real.’ Whether you agree with this comment or not depends on the type of programming that you would like to do. How great it is to see a student’s face after they have written their first program to make a few LEDs flash on and off. It is relatively easy to build the interface electronics, and to connect a few LEDs.
PARALLEL PORT HOW TO
Personally, I think that there is no better bus for a student to start to learn how to interface to external devices. This saves space in both the connector, and in the cable.
PARALLEL PORT SERIAL
A serial bus always has the advantage over a parallel bus, in that you only really need one signal line in a serial bus to transmit all the data. Well it’s all to do with the number of wires that must be connected. So why transmit one bit at a time when you can transmit 8 or 16 or even 32 bits at a time. But, you may say, the USB port is serial. So it will hold the fort for a few years yet before the USB port takes over in creating a truly integrated bus system. Nevertheless, it has survived, and now has several uses, especially with printers, scanners and external CDROMs. In its standard form, it can only send information in a single direction, and, even worse, only eight bits can be sent at a time.
PARALLEL PORT PC
Well it’s because of one reason: since PC’s started, the serial port has always been a standard port and most manufacturers abide with it, whereas the parallel port was a quick fix so that the original PC could communicate with a printer. So why has the serial port become more popular than the parallel port. Please could you send me some’ I didn’t really have the heart to write back to the user and say that it was a made-up chip, so I sent an email back saying that it was not available at the present time (which was true).
I have searched for this component, and cannot find any information on it. ‘Thanks for … Please could you tell me the function of the XYZ123 device. So that the chips would not be confused with real chips I labelled one of them XYZ123. In the card, I had drawn a few chips, to basically show that it had some electronics on it. One of the most amusing emails that I ever received related to an ISA card which I had drawn. Converting a DOS program to Microsoft Windows.