Test Your EQ
— Issue #146
Each month, Test Your EQ presents
some basic engineering problems for you to test
your Engineering Quotient. What's your EQ?
|
Problem 1— What
is the voltage across the 1 µF capacitor in the following
circuit?
Answer
Problem 2—
It has been shown before that a multiplexer is
a kind of "universal gate." Show how to implement a 1-bit-wide
full adder (three inputs, two outputs) using only 8:1
muxes.
Answer
Problem 3—There are 3 switches to control the
bulb in a room. Draw a schematic that allows each switch
to turn the bulb on or off independently.
Answer
Problem 4— The basic opamps in the figure shown
below are ideal. Find VOUT and determine the mathematical
operation performed by the circuit.
Answer
Problem 5—
What is the function of the following circuit?
Answer
Problem 6—
The Microchip PIC processors use bank-switching
to address more than the minimum amount of data memory
(e.g., more than 128 bytes on a PIC16xxx). What are some
of the advantages of this approach?
Answer
Problem 7— How do you set up an if-then-else-endif
control structure in assembly language, assuming the processor
has conditional and unconditional jump instructions?
Answer
Problem 8—
How do you do the if-then-else-endif control structure
if the processor has only unconditional jump instructions,
and uses conditional skip-next-instruction instructions
in place of conditional branches?
Answer
Published: September-2002
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