Elenco Surface Mount Technology Kit - Manual (Page 11)

1) When soldering surface mount resistors, apply the solder...
r A) to the component only.
r B) simultaneously to the foil and the component.
r C) to the foil only.
r D) first to the component and then to the soldering iron.
2) When driven by clock pulses, the outputs of the decade
counter...
r A) all go high and remain high.
r B) all go high and low simultaneously.
r C) go high one at a time in sequence.
r D) go low two at a time in sequence.
3) On a surface mount resistor...
r A) the last two digits refer to the resistance in ohms.
r B) the first digit designates ohms, kΩ, or MΩ.
r C) the middle digit designates ohms, kΩ, or MΩ.
r D) the first two digits refer to the resistance in ohms.
4) The LEDs are driven by...
r A) an operational amplifier.
r B) a decade counter.
r C) a hex inverter with open collector outputs.
r D) a monostable multivibrator.
5) The 4017 IC contains...
r A) a 5 stage divide by 10 counter.
r B) a 10 stage divide by 5 counter.
r C) four two-input NAND gates.
r D) six inverters with open collector outputs.
6) The SM-200K uses...
r A) 10 oscillator circuits.
r B) 6 oscillator circuits.
r C) 2 oscillator circuits.
r D) none of the above.
7) The 4011 IC contains...
r A) a 5 stage divide by 10 counter.
r B) a 10 stage divide by 5 counter.
r C) four two-input NAND gates.
r D) six inverters with open collector outputs.
8) When a voltage is applied to the piezoelectric buzzer, it
r A) changes dimensions.
r B) heats up.
r C) cools down.
r D) none of the above.
9) When the ASK button is pushed...
r A) capacitor C4 charges to 9V.
r B) capacitor C3 charges to 9V.
r C) the oscillators run.
r D) all of the above.
10) After the oscillators stop, the remaining LED gradually
goes out as...
r A) C3 loses its charge.
r B) the LEDs become forward biased.
r C) C2 loses its charge.
r D) Q1 starts to conduct.
-10-
QUIZ
Capacitor Electrical component for
accumulating energy.
Current The flow of electrons.
Diode An electronic component that
changes alternating current to
direct current.
Frequency The number of cycles per
second produced.
Integrated Circuit (IC) Any of a huge number of
semiconductor packages that
contain entire elements.
Light Emitting
Diode (LED)
A semiconductor device that
glows when power is applied
to its electrodes.
NAND Gate Operates as an AND gate
followed by a NOT gate. It
acts in the manner of the
logical
operation “and”
followed by negation. The
output is “false” if both inputs
are “true”. Otherwise, the
output is “true”.
Oscillator A device that moves back and
forth between two boundaries.
PC Board Printed Circuit Board.
Piezoelectric Buzzer A single disc-shaped
transducer consisting of
piezoelectric ceramic bonded
to a metallic plate.
Resistor An electronic component that
obstructs (resists) the flow of
electricity.
Surface Mount
Technology (SMT)
A method for constructing
electronic circuits in which the
components are mounted
directly onto the surface of
printed circuit boards and do
not pass through the PCB as
with the older ‘through-hole’
method.
Voltage The electromotive force that
“pushes” electrons through
conductive materials.
GLOSSARY
Answers: 1. B, 2 . C , 3 . D , 4 . B, 5 . A, 6 . C , 7 . C , 8 . A, 9 . D , 1 0. A