THE MAGAZINE FOR COMPUTER APPLICATIONS
Circuit Cellar Online offers articles illustrating creative solutions
and unique applications through complete projects, practical
tutorials, and useful design techniques.

WHAT'S YOUR ENGINEERING QUOTIENT?

Problem 5—Why is the emitter of an unused transistor in U2 shown connected to ground?

ANSWER

Problem 6—What is wrong with this function?

#define HEAD 1
#define TAIL 0
int coin_toss(void)
{
if (rand()&1) return HEAD;
else return TAIL;
}

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