(G) explain when multiplexer/de-multiplexer pairs are
most frequently used;
(H) explain the purpose of using de-multiplexers in
electronic displays that use multiple seven-segment displays;
(I) identify the most commonly used method for handling
negative numbers in digital electronics;
(J) discuss the use of programmable logic devices and
explain designs for which they are best suited; and
(K) compare and contrast circuits implemented with
programmable logic devices with circuits implemented with discrete
logic.
(11) The student understands and describes multiple
types of sequential logic and various uses of sequential logic. The
student is expected to:
(A) explain the capabilities of flip-flop and transparent
latch logic devices;
(B) discuss synchronous and asynchronous inputs of
flip-flops and transparent latches;
(C) explore the use of flip-flops, including designing
single event detection circuits, data synchronizers, shift registers,
and frequency dividers;
(D) explain how asynchronous counters are characterized
and how they can be implemented;
(E) explore the use of the asynchronous counter method
to implement up counters, down counters, and modulus counters;
(F) explain how synchronous counters are characterized
and how they can be implemented;
(G) explore the use of the synchronous counter method
to implement up counters, down counters, and modulus counters;
(H) describe a state machine;
(I) identify common everyday devices that machines
are used to control such as elevator doors, traffic lights, and combinational
or electronic locks; and
(J) discuss various ways state machines can be implemented.
(12) The student explores microcontrollers, specifically
their usefulness in real-world applications. The student is expected
to:
(A) demonstrate an understanding of the use of flowcharts
as graphical organizers by technicians, computer programmers, engineers,
and other professionals and the benefits of various flowcharting techniques;
(B) develop an understanding of basic programming skills,
including variable declaration, loops, and debugging;
(C) identify everyday products that use microcontrollers
such as robots, garage door openers, traffic lights, and home thermostats;
(D) describe a servo motor;
(E) explore the way microcontrollers sense and respond
to outside stimuli;
(F) explain why digital devices are only relevant if
they can interact with the real world;
(G) explain the importance of digital control devices,
including microcontrollers in controlling mechanical systems; and
(H) demonstrate an understanding that realistic problem
solving with a control system requires the ability to interface analog
inputs and outputs with a digital device.
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