Obsession with Handheld Computers
Preserving the handheld heritage of the computer revolution.
Hand386 is a unique handheld. It’s quite modern: the device was released in 2023. But at the same time it’s based on a rare Intel 386 compatible CPU.
From the practical standpoint, the device has a decent keyboard, genuine OPL3 sound chip and a high-quality screen, which makes Hand386 a good choice for playing non-demanding DOS games.
Plotting the function f(x)=1/sin(1/x) is a very difficult task. Few graph plotters are able to draw the function correctly.
Unfortunately, the built-in graph drawing program in the HP 100lx also does not quite cope with this task. Obviously, the specified function never takes values in the range (-1; 1).
It’s quite amazing, that you still can buy and legally register PocketDOS for your Windows CE 2.0 handheld.
Floppy disk drive for Sharp PC-3100 (CE-301F) is a very rare device. It’s quite hard to find even a decent photo of the device. Let me quote www.tankraider.com:
A late Austrian Sharp user Club Magazine lists a "discounted Group order" with a Price of 8000 Austrian Schilling for the PC-3000, 10,000 Schilling for the PC-3100 (Around 20% more) and – interestingly – about 4700 Schilling for the floppy. Yes the Floppy costed more than half of the PC-3000, making it one of the most expensive floppy drives ever sold at that time… And it explains why the floppy is so rare these days. The Floppy disk drive mentioned in the PC-3000 article obviously also fits for the PC-3100.
Therefore I decided to share few high resolution photos of the disk drive.
More info on Shard PC-3100 is here.
I met the owner of this device few days ago. The guy told me that he repaired this device by himself, and now uses it for programming microcontrollers. He writes programs in C and Pascal. The main advantages he mentioned were small size and extremely long battery life.
