Radio Shack 26-3861 Manuals

Manuals and User Guides for Radio Shack 26-3861. We have 1 Radio Shack 26-3861 manual available for free PDF download: Technical Reference Manual

Radio Shack 26-3861 Technical Reference Manual

Radio Shack 26-3861 Technical Reference Manual (158 pages)

Brand: Radio Shack | Category: Laptop | Size: 3.05 MB

Table of Contents

Table of Contents
5
Introduction
9
External View
9
- Printer Connector
  11
Internal View
12
- Memory PCB
  12
Specifications
14
- Theory of Operation
  17
General
17
Block Diagram
18
Cpu
20
Memory
20
Keyboard
27
Cassette Interface Circuit
28
Printer Interface Circuit
29
- Bar Code
  30
Bar Code Reader Interface Circuit
31
Buzzer Control Circuit
31
Clock Control Cirucit
32
Serial Interface Circuit
36
- Functional Block
  36
- Circuit
  38
- Modem Connector
  43
Appendix A/ Installations
63
- Rams ROM
  63
- Installation of Nickel-Cadmium Batteries
  63
- Installation of
  63
- Keyboard Layout
  65
- System Bus
  66
- Reset
  66
- Connector Pin Assignments
  68
- Cassette Connector
  69
- Character Code Table
  71
- Pin Confi Guration
  79
- 80C85A Basic
  88
- 81C55
  89
- Pin Configuration
  89
- Programming the C-9 Reading the C/S
  90
- Functional Block
  95
- 82C51
  96
- Function-Setting
  99
- Basic Construction of LCD
  105
- Construction of
  105
- Operation Theory
  106
- Hn613256P
  121
- Hn61364P
  125
- Mc14412
  131

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