Modified Elektronika MK-52: Soviet RPN Programmable Calculator + Manuals, USSR

Description

Modified Soviet Calculator Elektronika MK-52
MK-52 has an internal non-volatile EEPROM memory module, for permanent data storage, diagnostic slot, and slot for ROM modules.
I have modified the MK-52 calculators to make the EEPROM chips replaceable. As you can see on the photo a DIP socket has been soldered on the board. So now it is possible to change memory chips like SD cards : pull out one chip and insert another one. No need to (de)solder chips, just a flat screw driver is needed to pull out the chip.
The listing includes an EEPROM chip inserted in DIP socket on the main board. Chip has been tested and working. Extra chips -
new KR1601RR1 EEPROM IC
.
Old soviet electrolytic capacitors and vacuum fluorescent displays (VFD) are replaced with new ones.
Condition
Calculators are in perfect cosmetic condition. VFD with all segments illumined. Has been tested and guaranteed to be fully working.
Package Contents
Calculator
Plastic case for calculator
Schematic circuit
Manuals (2 parts)
EEPROM Chip
USB power supply cable for Elektronika Calculators
- save on batteries.
If you are interested in other components for mk-52 (power supply unit), please see my other lots:
Soviet Calculators
.
Shipping
Shipping of my lots can be combined. Safe packaging guarantied!
Item is shipped via Ukrainian Post and will be delivered by official post service in your country (for example USPS in USA or Royal Mail in UK).
Good luck!