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 3—Frugalson has a simple control application that requires 32 TTL/CMOS input pins and 32 output pins. The actual processing can be done by a $2 microcontroller, but the $2 microcontroller does not have enough I/O pins. Does Frugalson need to upgrade to a $50 embedded controller board?

ANSWER

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