HP-16C Programmable Calculator
| Category | Price | Seller | Device |
|---|---|---|---|
| Utilities | $4.99 | Duan Xiao | iPhone, iPad, iPod |
Features:
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• Full emulation of the HP-16C calculator. (You should refer to original HP-16C user guide to learn how to use it.)
• Original HD skin files.
Reviews
CHS key mismapped
fd1e4020
The CHS key seems to be mapped to MEM, which is a showstopper bug for a calculator.
Total Junk 16-bit CHS Broken
TakenByPicture
16-bit math only. 4 hex digits only. CHS is mapped to MEM key. Never updated. Total junk, buy elsewhere.
Nice but...
Sonny360
Wish i would have seen the last review before I bought. The CHS still doesn't work. Is there a fix soon???? Will not give more than one star until it is.
Don’t waste your time
Supuflorous Flounder
Not only does “CHS” not work, but the values it computes are dead wrong. I set 8 WSIZE. 127 1 + gives -128, which is correct, but in decimal mode I did 127+ and it told me the (decimal) result was “-0”, which is impossible in 2’s complement. I asked it to display in hex, and it showed me 0xFF, which is -1. If I subtract 1, it tells me “-1”, but when I ask for the hex display, it showed me 0xFE, which is -2. Note that this is not a “1’s complement/2’s complement” error. There is a negative 0 in 1’s complement, and it is 0x80; positive 0 is 0x00. And if it were in 1’s complement, 0xFF would be -127. I can only assume that there are seriously deep errors in the code. This should be removed from the App Store, because it is dangerously buggy. If I could give it minus-one stars, I would.
