PS 141 for Computer Science
Nov Dec Jan Feb Mar
  Who are the 1's & the 0's anyway?                                     "page down" please
  Let us make the 1's & the 0's dance!
  Now we can count in DEC, BIN & HEX . . .
  Yes our hardware counts to any number!
  Can we build a digital clock? Of course!
  . . with alarm function? Yes to that too!
  h o l i d a y     b r e a k     -- yehey!
  . . that can sing? Like a bird? Yes!
  . . that the computer controls? High-Tech, eh?
  Now for the Enjoyment . . . !

  teach ELECTRONICS to your 12-year old brother or MOM!
*** great teachers!!! click on their names BELOW ***

B4 April Rey  and Mark Lihan  (*** highly recommended - click here ***)
  PS 141 - Section A

A2 Antonio Maria R Bautista  (pdf)
A2 Maria Esperanza Fatima F Ortile  (pdf)
A4 Jan Benedick Asturias  (pdf)
A4 Kendrick Timothy Huang  (pdf)
A5 Perry Pe  (pdf)
A5 Jarell Mallari  (pdf)

A6 John Philip Posadas  (pdf)
A6 Kimberly Ong  (pdf)
A7 Randolph Espinosa  (pdf)
A7 John Hardey Loang  (pdf)
A8 Vanessa Gonzales  (pdf)
A8 Kenneth Flores  (pdf)
  PS 141 - Section B

B2 Esmee Siy  (pdf)
B2 Celilia Hung  (pdf)
B3 Mia Montayre  (html)
B3 Jairus Aragon  (html)
B4 April Rey  (*** highly recommended ***)
B4 Mark Lihan  (*** highly recommended ***)

B5 Adrian Rodriguez  (html)
B6 Enrique Perez  (pdf)
B6 Ramon Mejia  (pdf)
B7 Ryan Pachayasatierkul  (html)
B8 Jun Danganan  (pdf)
B8 Ramon Caguion  (pdf)

PS 141 (CS) Electronics for
Computer Science Sophomores
past years' (sy2001-2) - PS 141 Site Structure
last years' (sy2001-2) - Course Block Diagram

1 - who are 1's and 0's anyway?
      laboratory report on learning elements


2 - counting up and down
      laboratory report on learning elements
    ( 7442 / 7490 / 7493 / 74193 / 7442 / 7447 )

counting - hardware style

  • decimal "1" to "10"

  • binary "0" to "1111"

  • hexadecimal "0" to "F"

3 - making decisions (logic gates / selectors / multiplexer / demultiplexer)
      laboratory report on learning elements


4 - analog switches (diodes / transistors / operational amplifiers)
      laboratory report on learning elements

ON/OFF switches, AND / NAND / OR / NOR gates

5 - op-amp analog applications
      laboratory report on learning elements

  • basics of an operational amplifier.

      click for OpAmp Basics

  • Exercise 5. Build an OpAmp circuit to comply with the specifications below.

    1. Power supply : +12 volts, -12 volts, GND (0 volt).

    2. Connections according to the circuit above.

    3. R(f) + R(i) = 500K. Use a 500K potentiometer to perform the role of a volume control.

    4. Generate a "sine wave" using a "Signal Generator" and introduce 50-millivolts between the NInv (connected to GND) and Inv.

    5. Connect "Channel A" of the oscilloscope to the Inv input and "Channel B" to the "output" of the OpAmp.

    6. Manipulate the "volume control" and watch the behavior of signals shown in channel A and channel B.


6 - transistor analog applications
      laboratory report on learning elements


7 - allocated for specific interests
      laboratory report on learning elements

    did you know you could build a digital voltmeter without using computers or microprocessors? you could use only TTL and analog devices using the so-called "successive approximation" method