Another HP41C Simulator

[agarza]

This is the settings page.
CONT: Display contrast
BKLT: Display backlight (9 levels + off)
BEEP: (ON/OFF) Audible feedback, when pressing a button
SPEED: Simulation speed (Normal, fast, Max)
SHOW: Show Y and/or Z Registers
12/24: Time format
And on the right side the set the time and date.

Pressing ENTER key moves to the next field, and pressing the + or - keys increments or decrements value. ON key exits.

It is a minimal design due to lack of memory.

What do you think?