Chapter Resources: Chapter Assignments
Chapter 12 - Digital Systems

1. Refer to Fig. 12-1 (below). Label the sections of a digital computer. (A, B, C, and D)
   
2. Refer to Fig. 12-2 (below). What storage devices might be included in the section labeled A?
   
   
3. Refer to Fig. 12-2 (above). What is the name and function of the one-way bus labeled B?
   
4. Refer to Fig. 12-2 (above). What is the name and function of the two-way bus labeled C?
   
5. Refer to Fig. 12-2 (above). What type of semiconductor memory device is labeled D?
   
6. Refer to Fig. 12-2 (above). The semiconductor memory labeled D is a _____ (read/write, read-only) device.
   
7. Define these data transmission terms: bps, baud, error detection, parity checking, parity bit, even parity, odd parity, check sum, CRC, error correction codes (ECC), CCITT, MNP, data compression, ZIP files. (use www.pcwebopedia.com)
   
8. Refer to Fig. 12-3 (below, prepared using Electronics Workbench®, Version 5). Using circuit simulation software,
   1. construct this simple error-detection system,
   2. operate the circuit to observe its normal operation,
   3. disconnect (open) a transmission line (at A),
   4. operate the faulty circuit and observe its detection of an error, and
   5. demonstrate the error- detection system to your instructor.
      
      
9. Refer to Fig. 12-3 (above). Is this error-detection system using even- or odd-parity?
   
10. Refer to Fig. 12-4 (below). Using circuit simulation software
    1. construct this divide-by-60 counter circuit,
    2. operate the circuit to observe its normal operation, and
    3. demonstrate the divide-by-60 circuit to your instructor.