28123 Parallax Inc, 28123 Datasheet - Page 93

• 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

P15
P14
Connecting wires with dots: There are three places where wires intersect in Figure 3-12,
but only two dots. Wires only connect if there is a dot at the intersection. The wire that
connects the P4 pushbutton to the 10 kΩ resistor does not connect to the P3 pushbutton
circuit because there is no dot.
P4
P3
470
220
220
Ω
Ω
Ω
Vss
Vss
10
470
LED
kΩ
Ω
Vss
Vss
10
LED
kΩ
Vdd
Vdd
Figure 3-12
Schematic: Two
Pushbuttons and
LEDs