One 3" x 5" note card is permitted for this exam. Otherwise, the exam is closed book.
The note card must be turned in with the final exam.
Please check the most appropriate answer to the following
I found the note card to be
What is the goal of doping a pure semiconductor? (1 pt.)
Construct the truth table for the combination of transistor switches below. (2 pts.)
What common logic gate does the circuit represent? (1 pt.)
Describe how the bits of information are stored on the CD.
(What distinguishes the 0's from the 1's?) (1 pt.)
Describe how the laser pickup works.
(How are the bits read from the disk?) (1 pt.)
Discuss how "scratch resistance" is accomplished in the design of the
(A drawing would be nice...) (1 pt.)
If a typical printed page takes 3 kb (kilobytes) of storage, how many 10-page papers could be stored on a CD ROM? (1 pt.)
a. What is the current flowing in the circuit? (1 pt.)
b. What is the voltage across the 50 ohm resistor? (1 pt.)
c. What is the power dissipated by the 25 ohm resistor? (1 pt.)
d. What is the power delivered by the battery? (1 pt.)
Refer to the ASCII table, as needed.
0101 0011 0110 0101 0110 1110 0110 0100 0010 0100 0010 0100
Take a look at the scanned image.
(This was a group exercise during the semester -- Sept. 26)