1. CBC BODY COMPUTERS CHAPTER 12

2. CBC OBJECTIVES H ANALOG AND DIGITAL VOLTAGE SIGNALS H COMPUTER COMMUNICATION H COMPUTER MEMORY H INPUTS H OUTPUTS H MULTIPLEXING

3. CBC COMPUTER FUNCTIONS H FOUR PRIMARY FUNCTIONS H INPUT H PROCESSING H DATA STORAGE H OUTPUT

4. CBC ANALOG VS. DIGITAL C370

5. CBC COMPUTERS ONLY UNDERSTAND ON OR OFF H MUST BE DIGITAL INPUT H BINARY SYSTEM H SIGNAL CONVERSION H LOGIC GATES FIG 12-3 CLASS

6. CBC PROCESSOR OPERATION FIG 12-5 CLASS

7. CBC COMPUTER MEMORY H READ ONLY MEMORY (ROM) H RANDOM ACCESS MEMORY (RAM) H KEEP ALIVE MEMORY (KAM) H PROGRAMMABLE READ ONLY MEMORY (PROM) H ERASABLE PROM (EPROM) H ELECTRICALLY ERASABLE (EEPROM) H NONVOLATILE RAM (NVRAM)

8. CBC SIGNAL CONVERSION FIG 12-6 CLASS

9. CBC INPUTS H PROCESSOR ONLY UNDERSTANDS DIGITAL INPUT H TYPES OF SENSOR INPUTS –PRESSURE –TEMPERATURE –MECHANICAL MOVEMENT –VOLTAGE GENERATORS –SWITCHES

10. CBCTHERMISTORS H TEMPERATURE SENSITIVE SEMI- CONDUCTOR H NTC - LOWERS RESISTANCE WHEN HIGHER TEMPERATURE H PTC - INCREASES RESISTANCE WHEN HIGH TEMPERATURE FIG 12-24 C

11. CBC WHEATSTONE BRIDGE H USED TO SENSE PRESSURE OR TEMPERATURE H FOUR RESISTORS IN PARALLEL H PROCESSOR MEASURES VOLTAGE DROP 12-25

12. CBC PIEZOELECTRIC DEVICES H CONVERTS VIBRATION OF CRYSTAL INTO SIGNAL TO PCM H VOLTAGE GENERATOR H PCM SEES FREQUENCY SIGNAL

13. CBC PIEZORESISTIVE DEVICES H ACTS LIKE A VARIABLE RESISTOR H REGULATED VOLTAGE H PRESSURE CHANGES VOLTAGE DROP

14. CBC POTENTIOMETERS H MEASURES MOVEMENT H WIRE WOUND RESISTOR H MODIFIES REFERENCE VOLTAGE H THREE WIRE 12-26 C

15. CBC MAGNETIC PULSE GENERATOR H MEASURES SPEED AND POSITION H AC ANALOG H RELUCTOR INTERRUPTS MAGNETIC FIELD H PCM AMPLIFIES SIGNAL 12-29

16. CBC PULSE SIGNAL WAVE FORM FIG 12-27 C

17. CBC HALL-EFFECT SWITCHES H SEMI- CONDUCTOR H SHUTTER WHEEL H PERMANENT MAGNET H SCHMITT TRIGGER H DIGITAL SIGNAL

18. CBC VOLTAGE GENERATOR H FEEDBACK SENSOR H ZIRCONIUM DIOXIDE H VOLTAGE VARIES WITH OXYGEN CONTENT

19. CBC OUTPUTS (ACTUATORS) H CONVERTS ELECTRICAL SIGNAL INTO MECHANICAL ACTION H OUTPUT DRIVER IN PCM H MOTORS H SOLENOIDS H DISPLAYS H RELAYS

20. CBC MULTIPLEXING H SINGLE CABLE TO TRANSMIT MULTIPLE SIGNALS H MUX SIGNAL IS DIGITAL H PROCESSES ONE SIGNAL AT A TIME

21. CBC