Книга: Introduction to Microprocessors and Microcontrollers

Quiz time 16

In each case, choose the best option.

1 Return is:

(a) only used as part of a delay loop.

(b) a ticket to take you home again.

(c) an assembly directive.

(d) an instruction found at the end of a subroutine.

2 ORG is:

(a) never needed since the PIC always starts at address 0000.

(b) an assembler directive.

(c) short for orgasm.

(d) an instruction code.

3 An assembler converts:

(a) decimals into hexadecimals.

(b) main codes into subroutines.

(c) source code to object code.

(d) object code into binary code.

4 In choosing a clock circuit:

(a) a ceramic resonator is not as accurate nor so robust as a crystal.

(b) an RC runs at four times the frequency of a crystal.

(c) a crystal gives the most accurate and stable frequency.

(d) use an RC circuit and a crystal to get accuracy and robustness.

5 The normal execution time for when using 4 MHz crystal is:

(a) 0.25 microseconds.

(b) 1 millisecond.

(c) 4 milliseconds.

(d) 1 microsecond.

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