Tony Duell

ID:690
First Name:Tony
Last Name:Duell
Last Change:2017-08-13
Number of Files:8 (185th most prolific)
Number of Downloads:51,520 (191st most downloaded)

Digital Logic Simulator   (details) 48 ENG   7KB/4KB
Here's a digital circuit simulator for the HP 48. It has 8 internal primitives: AND, OR, XOR, NOT, BUF (buffer), HI (node tied to logic 1), LO (node tied to logic 0) and CLK (clock generator of definable high and low times). It also supports nested macros defined from these elements.
By Tony Duell. 1997/08/21

Flag -34   (details) 48 ENG   1KB
An important note about flag -34, where the manual is wrong.
By Tony Duell. 2008/08/16

HP 48 I2C Interface   (details) 48 ENG   543KB
I2C interface demonstrated at the 1997 London HP conference. Contains the program listings (both for the HP 48 and the PIC microcontroller) and the source of the manual in LaTeX. Tar/GZip archive containing files with Unix EOL characters.
By Tony Duell. 1997/09/29

HP 48 I2C Interface   (details) 48 ENG   543KB
I2C interface demonstrated at the 1997 London HP conference. Contains the program listings (both for the HP 48 and the PIC microcontroller) and the source of the manual in LaTeX. PKZip archive containing files with MS-DOS EOL characters.
By Tony Duell. 1997/09/29

IR to RS-232 Adapter   (details) 48 ENG   58KB
Schematics (in PostScript and ASCII) for an IR to RS-232 adapter.
By Tony Duell and Uwe Ziegenhagen and others. 1997/08/21

Radix-50   (details) 48 ENG   1KB/1KB
Converts 3-character strings to/from Radix-50 numbers used with old DEC hardware.
By Tony Duell. 1998/06/11

Undocumented HP 48SX features   (details) 48 ENG   3KB
Lists some undocumented features in the 48SX, mostly related to I/O communications.
By Tony Duell. 2017/08/13

USUM   (details) 48 ENG   4KB/4KB
When doing calculations with units, this program converts numbers of units to sums of larger units. For example, it converts 1.5_h to 1_h+30_min.
By Tony Duell. 1998/03/20

Part of the HP Calculator Archive,
Copyright 1997-2018 Eric Rechlin.