Microcontroller; Keyboard - Wyse WY-60 Maintenance Manual

6
THEORY OF OPERATIONS
Terminal PCB Logic Components Functional Description 6-1
Monitor/Power Supply Components Functional Description .....
6-6
Keyboard .
Additional Functional Descriptions .
Microcontroller .
Communication Interface ·
Display Memory .
Nonvola tile Memory .
Ke yboard In te r fac e .
Video Control .
Raster Scan Terminology .
6-8
6-9
6-9
6-10
6-11
6 -11
6-11
6 -11
6-13
Note--If you are unfamiliar with raster scan techniques, read the
brief explanation of raster scan terms at the end of the chapter.
TERMINAL PCB LOGIC COMPONENTS FUNCTIONAL DESCRIPTION
This section contains a functional description and reference
designator for each significant component of the logic circuitry
on the terminal PCB (see Figure 6-1).
6-1