28123 Parallax Inc, 28123 Datasheet - Page 212

• Manufacturer Part Number: 28123
• Description: TEXT WHAT'S A MICROCONTROLLER
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28123

• Style: Book
• Title: What's a Microcontroller?
• Contents: Whats a Microcontroller? Text
• Product: Microcontroller Accessories
• Core Processor: PIC16C57c
• Flash: 128 Bytes
• Operating Supply Voltage: 9 V
• Board Size: 31 mm x 16 mm
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Page 204 · What’s a Microcontroller?
Light Meter Parts
(1) Photoresistor
(1) Resistor – 220 Ω (red-red-brown)
(1) Capacitor – 0.01 µF
(1) Capacitor – 0.1 µF
(1) 7-segment LED display
(8) Resistors – 1 kΩ (brown-black-red)
(6) Jumper wires
Building the Light Meter Circuit
Figure 7-9 shows the 7-segment LED display and photoresistor circuit schematics that
will be used to make the light meter, and Figure 7-10 shows a wiring diagram of the
circuit. The photoresistor circuit is the same one you have been using in the last two
activities, and the 7-segment LED display circuit is the one that was controlled by the
BASIC Stamp in Chapter #6.