1 Sep
2013
1 Sep
'13
12:54 p.m.
On 09/01/2013 11:17 AM, Tony Duell wrote:
Actually, TI calculators were not that common over
here. Yes, you could
get them, but the brand that you bought if you didn't ahve a particualr
model in mind was Casio. They were (and are) everywhere. I don't think
I've ever seen a TI desktop calculator in the UK.
The SR-22 is an odd bird. Although it has hex, octal and decimal modes,
it does not do Boolean operations (no "AND, OR, NOT, etc."). If you
need to shift, use multiply or divide.
Internally, it keeps everything in base 2, including the decimal point.
So, unlike later "programmer's" calculators, it works in full floating
point at all times. Decimal computations take longer to do than binary
ones, as the calculator has to convert to/from decimal. It's no speed
demon.
There's only one memory and it is not programmable.
An unusual 1973 bit of kit and not inexpensive for the time.
--Chuck