EE 476: Homework 5
Due At the start of your 5th lab.
- For the simple DAC circuit shown in Lab 5, each port output pin can be
at Vcc=5 volts or at zero volts. Solutions using any computer program will
be graded as a zero.
- Show that if the port output is 0x80 that the voltage going to the oscilloscope
equals 2.5 volts.
- Show that if the port output is 0x40 that the voltage going to the oscilloscope
equals 1.25 volts.
- Simply storing pairs of byte-length DAC values for the (x,y) position of
points will limit you to less than 500 points in 1k of memory. Describe a
compression scheme which will allow your Lab 5 program to record and display
more than 1000 points.
Copyright Cornell University Feb 2003