Product Information; Introduction; Description - HP Integral Personal Computer Service Manual

Chapter
1
Product Information
1.1 Introduction
This chapter provides an overview of the Integral Personal Computer.
The Integral PC is a fully integrated system that contains a built-in disc drive and printer. It is de-
signed for ease of operation and flexibility. The computer is capable of multi-tasking. It provides
extensive
I/O
(input/output) and interfacing capabilities.
1.2, Description
The computer is based upon a 16-bit CPU (central processing unit) and contains Sl2K-bytes of inter-
nal RAM (random-access memory). The computer reserves address space for up to 1M-byte of internal
ROM (read-only memory), all contained in a plug-in ROM assembly.
Notel Current production units are equipped with a plug-in ROM assembly that has room for
two ROM PCAs. The operating system ROM PCA
is standard. It contains the HP-UX System
V operating system (address space is reserved for up to SI2K-bytes of operating system ROM).
An option ROM peA, containing up to SI2K-bytes of optional ROM (for languages and appli-
cation programs), may be added to the plug-in
ROM
assembly.
Early production units are equipped with a plug-in ROM assembly containing the HP-UX
System III operating system on two ROM peAs. This assembly cannot be expanded. It cannot
be serviced to the component level.
The follOwing devices are integral parts of the computer:
• A 3
1
/z-inch micro-floppy disc drive. _
• A 255 by 512 pixel electroluminescent display. (The display can be configured for up to 31 lines
with up to 85 characters per line.)
• A 90-key detachable keyboard.
• An HP-IB
(IEEE-4BB)
interface.
• A thermal inkjet printer.
• A real-time dock.
• A speaker.
• An external
I/O
bus with two
I/O
ports for interfaces and memory modules.