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    Single Digit Seven Segment Display Scoreboard HELP!!

    Yes...your doing good!:) That should be OK....This is all DC and there are no discrete oscillators so should be ok to move the parts closer together. They may be heat from the ULN2004 when its driving all LED segments at the same time (like when displaying 0 (zero) or during lamp test. But...
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    Single Digit Seven Segment Display Scoreboard HELP!!

    Hi Here is a partially wired breadboard. I wired the first PB circuit. Red=+5, Black=Gnd, Green = jumper.
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    Single Digit Seven Segment Display Scoreboard HELP!!

    Hi thefstopjedi:) Its a little difficult to tell because the components are not marked. Some comments: 1. Add pin numbers to all your pins, including caps and resistors, and also Ref designators, on your breadboard diagram. Its makes it easier to communicate point to point connections and...
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    difference between 7473 and 7473A

    Hi If your testing on a breadboard, I see three possible issues. 1. Your switch doesn't include a debounce circuit. The switch contacts could bounce causing multiple logic transitions to be sensed by the logic inputs 2. The datasheet states that the 74LS73A has a "setup" time of 20ns. This...
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    difference between 7473 and 7473A

    o_O Can you point to a datasheet so we can speak the same terminology? better yet post your circuit..:cool:
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    difference between 7473 and 7473A

    Hi 7473 triggers on positive edge clock, 74LS73A triggers on negative edge clock. Review the function tables on the data sheet.
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    Multi-input D flip-flop?

    Or one of these: http://www.ti.com/lit/ds/symlink/cd4042b.pdf
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    Seven segment upsize

    After looking at the schematic..Yes. Looks like you could connect outputs of the CD4543 to the inputs of a ULN2004A. Then use the outputs of the ULN2004A to drive a 7-segment LED display.
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    LM350T variable voltage regulator

    :eek:As "dark side" said, you need the capacitors..:cool: double check the pinouts of the LM317, maybe connections are transposed.... Are you sure R1 is 120 ohms? Is it maybe something much less? Is there actually a connection from "adj" pin thru the pot to gnd? If this connection is missing it...
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    Multi-input D flip-flop?

    Not sure what your trying to accomplish but why not just use three D flip-flops?
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    Seven segment upsize

    Hi The short answer is maybe...:D Do you have a schematic of the circuit and the part number of the new LED display? LED datasheet would show voltage/current requirements. If more current is required, might be able to add a second PCB with a ULN2003/4 to drive each new LED display.
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    Single Digit Seven Segment Display Scoreboard HELP!!

    all caps, except c10, 50v, +/-20%, ceramic, or better c10 470uF, 25v, +/-20%, electrolytic Diodes are P/N 1N4148
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    resetting BIOS from motherboard

    Zulu Perhaps I should clarify my statements in post #2. My reply was based on your use of "BIOS settings" being synonymous with "CMOS settings". The CMOS settings are stored in volitile memory so my statements for that would hold true. But if you are referring to the default settings flashed...
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    resetting BIOS from motherboard

    Generally, Bios settings are not stored in non-volatile memory. Settings are retained in memory by power from an onboard battery. So removing all power from the system, including the battery, should clear the settings. Basically, when you short JOPEN with all power removed, your ensuring that...
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    Single Digit Seven Segment Display Scoreboard HELP!!

    No worries...your doing great:) Yes. Just add one to the CD40106BE
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    Single Digit Seven Segment Display Scoreboard HELP!!

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    What resistor is this?

    0.68 ohm, 9 watt, probably wire wound.
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    Need help on converting 0-5v signal to 0-10v signal

    Hi With a 0-5v input, 0-10v output, 15v supply, I don't understand why you couldn't just use an LM324 or LM358(?), but anyway... What type of load are you driving with the output? Is it inductive? Could be an inductive spike damaging the opamp output. Might try placing a diode from the opamp...
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    Single Digit Seven Segment Display Scoreboard HELP!!

    Yes, so you need one chip. If you use 4093's you will need two chips.
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    Single Digit Seven Segment Display Scoreboard HELP!!

    one? ah...no. count again..
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