0195136047.pdf

326 DIGITAL BUILDING BLOCKS AND COMPUTER SYSTEMS

Timer

Microcomputer

Digitally

activated

switches

Bread

ingredient

container

Heating

resistor

Mixing

motor

Cooling

fan

Fan

motor

To 120-V

60-Hz

supply

Keypad Display

Temperature

sensor

ADC

Figure 6.6.1Simplified schematic diagram of a microcomputer-controlled breadmaking machine.

Problems

6.1.1Convert the following binary numbers into deci-

mal numbers:

(a) (10110) 2

(b) (101100) 2

(c) (11010101) 2

(d) (11101.101) 2

(e) (.00101) 2

6.1.2Convert the following decimal numbers into bi-

nary numbers:

(a) (255) 10

(b) (999) 10

(c) (1066) 10

(d) (0.375) 10

(e) (1259.00125) 10

*6.1.3Convert the following octal numbers into decimal
numbers:
(a) (257) 8
(b) (367) 8
(c) (0.321) 8

(d) (367.240) 8

(e) (2103.45) 8

6.1.4Convert the following decimal numbers into octal

numbers:

(a) (175) 10

(b) (247) 10

(c) (65,535) 10

(d) (0.125) 10

(e) (379.25) 10

6.1.5Convert the following octal numbers into binary

numbers:

(a) (3425) 8

(b) (3651) 8

(c) (.214) 8

(d) (4125.016) 8

(e) (4573.26) 8

6.1.6Convert the following binary numbers into octal

numbers:

(a) (011 100 010 101) 2