Where is the pin 1 on a ribbon cable?
Pin 1 on a ribbon cable is easily identified by the colored stripe that runs down the edge of the cable. Just as every cable has a pin 1, all connectors on devices, adapters, or motherboards have a pin 1.
How are ribbon cables numbered?
Ribbon cables are usually specified by two numbers: the spacing or pitch of the conductors, and the number of conductors or ways. A spacing of 0.05 inch (1.27 mm) is the most usual, allowing for a two-row connector with a pin spacing of 0.1 inch (2.54 mm).
What is a pin 1 in PCB?
Flat-pack means that it is very thin and the legs go out sideways instead of down. This is a surface mount package. With these packages, pin 1 is marked with a dot, and is below and to the left. The other pins are numbered counter-clockwise around the chip.
Where should pin 1 be located on the IDE controller?
The location of the 1 pin (first pin) on an IDE cable is usually designated by the red stripe on one side of the cable. In the example picture above, the 1 pin is on the right side of the cable.
How do you know which way the ribbon cable goes?
Ribbon cables generally look different from one another, but there’s usually something on the cable to let you know which way you install it. Look for a colored strip or a symbol near the top of the cable to show you which side is up.
What two methods are used to indicate pin number one on an IC?
Polarity Marking and Pin Numbering This means the package has to have some way to convey which pin is which. Most ICs will use either a notch or a dot to indicate which pin is the first pin. (Sometimes both, sometimes one or the other.)
When attaching a ribbon cable to a drive if there is no making for pin 1 Which way should you orient the Red Stripe?
When attaching a ribbon cable to a drive, if there is no marking for pin 1, which way should you orient the red stripe? Farthest away from the power supply connector.
How do I know if I have a IDE cable?
An IDE cable has a red stripe along one edge, like you see below. It’s that side of the cable that usually refers to the first pin.
Where is pin 1 on the ribbon cable?
The ribbon cable has a stripe, usually red, to tell you where Pin 1 is on its connectors. It’s finding Pin 1 on the device and on the motherboard that’s the real headache. By the time you finish this Daily Feature, you’ll always be able to find Pin 1. Motherboards may use any of five methods to designate Pin 1.
Can ribbon cables be connected backwards?
In other words, the connector can be connected backwards if you’re not careful. This is where the pin number designations become important. The ribbon cable has a stripe, usually red, to tell you where Pin 1 is on its connectors. It’s finding Pin 1 on the device and on the motherboard that’s the real headache.
How to identify pin 1 on a circuit board?
If you can’t identify Pin 1 on one connector, you might on another one facing the same direction. Here again, there may be exceptions, but you can generally count on consistency. Look for a label on the board around the connector.
How do I know which pin to use for a connector?
Use them to crosscheck the other methods. Connectors that are positioned on the board front-to-back, with respect to the computer case, will almost always have Pin 1 toward the back of the case (See Figure A ). There are rare exceptions, but generally you can rely on this rule for connectors oriented in this direction.