Ferguson Institute Online Div. of Jmlit

Assignment #13
THE SIMPLIFIED INTERFACING:  This week lesson is on the DVD "Syspro".  

Programmed I/O is explained on the DVD, which requires interupts and memory stacks.
Once the PCs is up and running components uses interupts to get CPU's attention and processing time. 

Subjects covered on DVD:

1.  Interupts, masks, DMAs, handshaking.

2.  Polled or memory-mapped I/O and decoder chips.

3.  Digital analog converters & DASs.

4.  Peripheral interface adapters (PIAs) I/O port chips like 6820s & 8255s.

5.  How to use buffers or relays to connect pressure, heat, light, motion, gas, & level,   

      sensors to a PIA or I/O port to isolate high volts and high current from the PC.

6.  Modems (modulators & demodulators),  RS232c, UARTS, shift registers used to

     change serial data to parallel or vice versa.