Specifications

ii
How this book is organized
This manual is made up of 18 chapters and appendices.
Chapter 1. Software Overview for the BHT
Surveys the software structure of the BHT and introduces the programs integrated in the ROM
and the language features of BHT-BASIC.
Chapter 2. Development Environment and Procedures
Describes hardware and software required for developing application programs and the devel-
oping procedure.
Chapter 3. Program Structure
Summarizes the basic structure of programs and programming techniques, e.g., program
chaining and included files.
Chapter 4. Basic Program Elements
Describes the format of a program line, usable characters, and labels.
Chapter 5. Data Types
Covers data which the programs can handle, by classifying them into data types--constants
and variables.
Chapter 6. Expressions and Operators
Surveys the expressions and operators to be used for calculation and for handling concate-
nated character strings. The operators connect, manipulate, and compare the expressions.
Chapter 7. I/O Facilities
Defines I/O facilities and describes output to the LCD, input from the keyboard, and control for
the timer, beeper, and other I/Os by the statements and functions.
Chapter 8. Files
Describes data files and device files.
Chapter 9. Event Polling and Error/Event Trapping
Describes the event polling and two types of traps: error traps and event (of keystroke) traps
supported by BHT-BASIC.
Chapter 10. Sleep Function
Describes the sleep function.
Chapter 11. Resume Function
Describes the resume function.