There are many stores that sell 9 pin serial cables most of them being electrical stores. Some of the larger supermarkets that stock electrical items may possible sell them as well but it probably depends on where the location of one lives. For example in the UK shops such as Currys or larger Tesco stores could sell them.
You can buy USB serial adapters at most retail outlets and computer supply stores. Depending on pin requirements, length of cables etc. they can cost anywhere from $9 and up.
40 pins but 39 pin working
They are capable of running 5.1 surround sound in one convienient pin. Toslink cables are capable of 7.1 and also run on one pin.
I know that they sell mockingjay pins and other Hunger Games merchandise at Toys R' Us.
You solder ground to pin 1, hot/plus to pin 2, cold/minus to pin 3
There are many online stores which sell school-girl pins. Craft websites may sell them, as do sites such as CafePress. Auction sites like eBay may also sell them.
On PATA cables the stripe down one side indicates which side is pin 1.
There are two types, a 25 pin male to 25 pin female, and the most common, 25 pin male to a Centronix, which is what printers use. There are 25 pin cables that is not are not printer cables, but they are very uncommon. Almost all the time when someone refers to a parallel cable they are referring to a printer cable, which is a 25-pin to Centronix cable.
Random Number Generation algo
80 pin cables are generally newer than 40 pin cables, and can, in most cases, transfer data at a faster rate. The extra 40 wires are not actually pins, but wires separated the pins that actually carry data. The purpose of these is to reduce signal interference.
For Two Connectors on a motherboard for two 40-pin data cable.
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