quinta-feira, 30 de julho de 2015

CASIO Classwiz fx-991SP X Iberia calculator

Iberia version (SP) of the Classwiz fx-991E X calculator.
Made in China.575 Functions.
The calculator is sold inside a blister package and it has the battery installed from factory.
3 years warranty in Iberia.

Menu languages:
This Iberia model supports 3 of the spoken languages in Iberia: Castellano, Català and Português.

Power supply:
I removed the LR44 coin cell to check it: 1.584 Volt under no load.
Made in China. Expiration date 09/16.

So, this calculator appeared this month in the shops and it has 3 years of warranty, meaning that it will be protected until 07/2018.
However, the included battery will expire much before, in 09/2016. How strange is this?

The calculator works nicely without the battery installed as long as there is enough light conditions to power the integrated solar panel.

Hard cover. This is a pocket calculator. Nice!

Good LCD featuring high resolution and easy reading.

Full contrast to show the indicators.

Good contrast adjustment.

Single LR44 1.5Volt coin cell.

Six screws and the back cover pops out easily (no clamps).

One single SoIC.
A 220uF/6.3V capacitor to store energy for a about 10 seconds running without batteries and without enough light to feed the solar panel.

The keyboard membrane is visible here.
As usual, CASIO uses real good quality plastic keys.

Self test1:
Power off the calculator.
Press "Shift" + "7" + "ON"
Press 9
Press "Shift" to scroll the tests.
Press "ON" to reset.

Self test2:
Power off the calculator.
Press "Shift" + "7" + "ON"
Press 8
Press the keys indicated by square brackets.

Press "ON" to reset.


domingo, 26 de julho de 2015

SANYO TETRASOUND 12X-630 transistor radio

Vintage radio from 1964...1965.
MW and three SW bands.
Excellent sensitivity and good sound.

This radio as acquired in mid 60's by an employee working at Sheik restaurant in Lourenzo Marques, Mozambique,
The local Sanyo distributor was Luzelsom based in L.M. but a few years after the independence, in 1978, the company was nationalized along with many others into a new state company called ELECTROMOC E.E..

sábado, 25 de julho de 2015

HP-25 Calculator

From 1975...
Installed new NiCd batteries and it is working just fine.

quarta-feira, 22 de julho de 2015

Riga Radio Rupnica MPR Model 103 "50 years USSR" (1972)

For the deputies of the Supreme Soviet of the USSR to the ceremonial meeting in honor of the 50th anniversary of the USSR in 1972 it was made a gift option receiver Rīga 103-2 (MRP Model 103) with a picture of the flag of the USSR and the inscription "50 years of the USSR." Another gift option with the image of a silhouette of Riga was intended for foreign guests.

Exports receiver comes under the trademarks Rīga, Astrad, Solar, Astrad Solar, Astrad AURIGA often with European range of VHF and HF 16 ... 19 m instead of 60 meter.

 MRP Model 103 “50 лет СССР

o   Produced in 1972
o   Special USSR 50th anniversary "50 лет СССР" model
o   Based on the Riga 103-2 model
o   МРП = Министерство Радиотехнической Промышленности.
o   MRP = Ministry of radio technical industry.
Ref. http://www.radiopagajiba.lv/RRR/riga101/riga103.htm

My radio acquired some time ago from a person that got it in Moscow when working there in 1974.

segunda-feira, 20 de julho de 2015

Casio FC-200 Financial Calculator

New old stock from 1988....

Dismantling for internal inspection.
There was a small amount of battery leakage.

Integrated Circuits:
HD61747B55 Processor.
HD61914 1KByte static RAM.


Came back to life one again.

Maximum contrast set.

Default settings.
Thousands and decimal  separator.

Alphanumeric capability.