Bootup
Processor
Memory
Power
Display
Hard disk
Floppy drive
Keyboard
Pointer
Audio
Status
Serial
Parallel
Infrared
PS/2 port
USB
Docking port
PCMCIA
CPU module Motherboard
BIOS IC
Floppy disk module Hard disk drive
CPU module
Motherboard
Motherboard
RAM board
Battery
Motherboard
AC adapter
Motherboard
LCD module
Motherboard Hard disk drive
Motherboard Floppy disk module
Motherboard
BIOS IC
Keyboard
Motherboard
BIOS IC
Keyboard
Top case
Motherboard
Speaker
Motherboard
Motherboard
Motherboard
Motherboard
Motherboard
Motherboard
Motherboard
Motherboard PCMCIA socket
Table 1-13. Functional Structure
Main processor.
Primary system circuitry.
Code for basic system functions.
First source of
Second source of
Main processor, numeric data processor, L1 and L2 cache. Primary system circuitry.
First 32 MB of RAM, video RAM.
Changeable RAM.
Power storage.
AC adapter socket, power switch, lid switch,
Display/graphics controller, PCMCIA/zoomed video controller, video RAM, power converter for backlight.
Display output, backlight.
Hard disk controller.
Hard disk mechanism.
Floppy disk controller.
Floppy disk mechanism.
Keyboard controller.
Keyboard BIOS.
Key switches.
Keyboard controller, pointing stick controller (PS/2 output). Keyboard BIOS.
Pointing stick sensor.
Touch pad sensor, controller (PS/2 output).
Audio controller, audio decoder, speaker amplifier, headphone amplifier, zoomed video controller, external audio jacks, microphone.
Speaker (mixed left and right channels).
Keyboard controller, main LEDs, keyboard LEDs.
I/O controller, serial connector.
I/O controller, parallel connector.
I/O controller, infrared transmitter/receiver.
Keyboard controller, PS/2 processor, PS/2 connector.
Bus controller (South Bridge), USB connector.
Docking logic, docking connector.
PCMCIA controller.
PCMCIA connectors.
HP OmniBook 900 |
