Posts tagged with 'scientific'


Commodore SR4921

Back in the day, the second calculator I owned was a Commodore SR 4190R , a fun little beast. Once I’d found a replacement for the one I had (it’d got lost at some point) and I’d found an example of its more “experienced” brother, the SR 9190R, I decided to try and get copies of all the similarly-bodied calculators that Commodore had made back in the 70s, maybe half a dozen or so. It didn’t take too long, but there was one of that type that just eluded me, the SR4921. Until earlier this month, that...

READ MORE

Scientists in Paris

We were vacationing in Paris last week in a hotel in the 16eme arrondissement, just outside the boundary of the 8eme. We’d stayed there before, but I noticed this time that several streets in the vicinity has names commemorating scientists and mathematicians. I thought it would be fun to take pictures of the ones I could find that were close and put them in a collage: In order, they are: Augustin-Jean Fresnel . We also saw a lighthouse lens built on his principles in the Musée Maritime...

READ MORE

New calculator: Sinclair Cambridge Scientific

While I was away last week in Vegas for the DevExpress Summit, my newest calculator was delivered: the Sinclair Cambridge Scientific. It was with a little bit of apprehension that I opened up the padded envelope on Friday afternoon to see what it looked like and whether it worked properly (sometimes sellers on eBay are a little, er, shall we say, enthusiastic about how good the calculator they’re selling is and somehow neglect to mention various obvious problems). This one was doubly worrying: the...

READ MORE

New calculator: Sinclair Scientific

I admit it, I am a helpless geek: I love collecting old calculators and computing devices. My wife thinks I'm bananas, and she may be right, but there's just something about holding something from the dawn of calculating electronics. A couple of weeks ago, I snagged a very nice looking Sinclair Scientific, complete in its original box with the manual. This is a tiny (for the time anyway; this was 1974) calculator in the Cambridge series from Sinclair, and purports to be a scientific calculator...

READ MORE