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| Figure 1: Seven Segment Display with segment labels. |
Each segment of a Seven Segment Display is labeled as shown in figure 1. There is a jumper
array for each digit of the LED display. Looking at the chart for setting the jumpers
(which comes with the computer case) you will notice that each segment has a pin in the
jumper array (labeled a through f). Also, each of the segment pins as has
adjacent pins labeled 1, 2 and 3. This array will look something the following.
• 3 3 B 1 1 1 D 2 2 2 F 3 3 •
1 A 2 2 2 C 3 3 3 E 1 1 1 G 2
Placing a jumper from the segment pin to a number pin will cause that segment to light as follows.
1 = Normal
2 = Turbo
3 = Both
Placing a jumper from the segment pin to the pin labeled 1 will cause that segment to
light when the computer is in the normal mode. Placing the jumper from the segment pin to
the pin labeled 2 will cause the segment to light when the turbo button is in the turbo
position. Placing the jumper from the segment pin the pin labeled 3 will cause the segment
to light in both normal and turbo modes. To set the display to show "LO" and
"HI" for the clock speeds the following settings are used.
| Most Significant Digit | Least Significant Digit |
| a = open b = 2 (turbo) c = 2 d = 1 (normal) e = 3 (both) f = 3 g = 2 |
a = 1 b = 3 c = 3 d = 1 e = 1 f = 1 g = open |