vintage calculator

[ykilroy]

This is JL-210 from Casio japan.

It has nice shape and color. Caps are made by double shot.

I love this calculator 

[Daniel Beardsmore]

Now that's something I never though of -- calculators. I checked my fx-82, and indeed it has double-shot buttons:



I have no idea how old it is, but I've had it since the early 90s, so it's got to be over twenty years old.

[FreeCopy]

I have an HP-55 that's in really great shape.

Too lazy to take pictures but here's what I found out about the keys from here:

"Based on the way that most people poked at the keys he designed a hinged key and avoided the 'oil can feel' of TI and other calculators. It took many design iterations to get the final design which used bent beryllium copper strips. The key bottoms were designed to be easy on the copper while still providing the right feel.

The keys were made with a state-of-the-art double shot injection molding technique. This was very difficult but ensured that key legends would never wear off."

On the keys I can very distinctly feel the edges of the labels. They are very slightly lower than the surface of the key, like infilled engraved legends.

About 2/3 down this page there is another description with pictures of the circuit board and metal strips(switches): http://persistent-tech.blogspot.com/

[ykilroy]

Now that's something I never though of -- calculators. I checked my fx-82, and indeed it has double-shot buttons:

(Attachment Link) (Attachment Link)

I have no idea how old it is, but I've had it since the early 90s, so it's got to be over twenty years old.

wow. It's a cool old calculator.

[ykilroy]

I have an HP-55 that's in really great shape.

Too lazy to take pictures but here's what I found out about the keys from here:

"Based on the way that most people poked at the keys he designed a hinged key and avoided the 'oil can feel' of TI and other calculators. It took many design iterations to get the final design which used bent beryllium copper strips. The key bottoms were designed to be easy on the copper while still providing the right feel.

The keys were made with a state-of-the-art double shot injection molding technique. This was very difficult but ensured that key legends would never wear off."

On the keys I can very distinctly feel the edges of the labels. They are very slightly lower than the surface of the key, like infilled engraved legends.


You mean this calculator. Pretty good shape

About 2/3 down this page there is another description with pictures of the circuit board and metal strips(switches): http://persistent-tech.blogspot.com/

[alienman82]

removed.