Denso BHT-904B User Manual page 19

[3] Software Used at the BHT Unit
The BHT unit FLASH memory has a system area and user
area, with the system program stored in the system area
and font files and user programs stored in the user area.
The BHT unit is shipped with the system program and font
files stored in their respective areas.
Application programs (*.PD4) stored in the user area are run by the system program in order to use the
BHT.
It is necessary to download application programs (*.PD4) and data files (product master files etc.) required
to run application programs (*.PD4) to the BHT user area prior to use.
 System Program
 Driver
Drivers is a set of programs that directly controls the BHT hardware. It can be called up by the
BHT-BASIC Interpreter or System Mode.
 BHT-BASIC Interpreter
This program interprets application program (*.PD4) command language and controls the BHT unit
hardware via drivers.
 System Mode
This program is used to operate files, make system environment settings, and perform various types of
tests.
Refer to "Chapter 4 System Operation" ."4.4 System Mode" for further details.
Barcode Handy Terminal
Host computer
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