Then I'd need 2x 339 chips ($1.49 ea), 1x 7408 chip ($?.?? ea), 4x LEDs ($?.?? ea), 4x 1K resistors (5 for $0.99), 1x 5V regulator ($1.95), and 9x assorted variable resistors ($1.49 ea) to make one. (Radio Shack prices given.) Not including the $?.?? components, that only adds up to $19.33 ($20.69 after tax). Something tells me that even after the $?.?? parts they don't add up to $68.
Then I'd need 2x 339 chips ($1.49 ea), 1x 7408 chip ($?.?? ea), 4x LEDs ($?.?? ea), 4x 1K resistors (5 for $0.99), 1x 5V regulator ($1.95), and 9x assorted variable resistors ($1.49 ea) to make one. (Radio Shack prices given.) Not including the $?.?? components, that only adds up to $19.33 ($20.69 after tax). Something tells me that even after the $?.?? parts they don't add up to $68.
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