Hardware Ternlinology; Software Tenninology - HP 340 Series Service Manual

Hardware Terminology
Hardware means the physical elements of this workstation. Different parts and locations of
hardware items arc explained below.
Product Terms/Conventions
The following terms are used to describe products and their main parts and areas:
• SPU - System Processing Unit, a box containing the power supply, processor board and
other assemblies sHch as RAM add-on or interface boards.
• Internal (circuit) - A circuit, such as an interface, that is part of the processor board.
Internal does not mean "inside the SPU's case" .
• External (circuit) - A circuit that is located on an assembly other than the processor
board. External does not mean 'outside the SPU's case'.
• Peripheral- A device external to the SPU, such as a keyboard, monitor, disc drive, plotter,
printer, etc.
• System - An SPU with OIle or more peripherals connected together to run an application
for a desired end result.
Printed Circuit Assemblies
Printed circuit boards in the SPU and are made of several component parts. In this manual,
boards identify the printed circuit assemblies installed inside the SPU. Boards are not usually
removed or installed by llsers.
Printed circuit cards are those llsed in the DIO-I slot. They are usually installed by users.
Software Terminology
As used in this manual, software refers to infonnation stored in, or on a device. Typically,
this information can be changed and can be transferred to another location in the workstation.
Types of software are:
• Firmware - The data or instructions in Read-Only-Memory (RONI) chips.
• Operating Systems - Computer languages, such as BASIC, Pascal, and HP-UX. They
have various commands, statements, and keywords that when executed by the CPU in a
particular sequence, cause SPU to manipulate data to SOlIle desired end result.
• Application Program - A series of operating system prograrn lines in a specific sequence to
cause specific actions, such as accounting, electro-mechanical design, data sampling and
output, etc. This information is sometilnes referred to as software as it is information
that is stored in or on a lnedium and can be transferred.
8 Product Information