Hi ! On Tue, 6 Feb 2001, Chuck McManis wrote: You _ALWAYS_ install integrated circuits in DIL-cases with Pin 1 (marked by a dot, a flatted edge, or a notch in the chip) to the notch in the socket. If there is no notch in the socket (never seen such), you can look at the solder pads on the board, pin 1 usually differs from the rest. So, if all pads are sqare pads, pin 1 is round or vice versa. ...Michael -- In TV, there are bluescreens to put a faked reality behind a real played scene, in Windows, you sometimes see the real scene, when the fakes go out for lunch.

Hi Chuck If you are not sure of the polarity of the socket, you can power up with the part removed. This way you can check the power leads. As I recall, most of the Dallas parts have 5 volts on the highest numbered pin and gound at the other corner. If you are putting a new clock in, you may need to cause the clock to start. Most are shipped in a disabled mode and require a write to one of the control registers to start them. Check a Dallas spec sheet. Dwight Chuck McManis <cmcmanis(a)mcmanis.com> wrote: