# 535 series integrated circuits

> pMOS memory for the Elektronika microcomputers

**Wikidata**: [Q131630361](https://www.wikidata.org/wiki/Q131630361)  
**Source**: https://4ort.xyz/entity/535-series-integrated-circuits

## Summary
The 535 series integrated circuits are pMOS memory chips developed by Svetlana in 1974 for use in Elektronika microcomputers. These integrated circuits form a series of pMOS memory components that were manufactured in the Soviet Union and used in various computing applications.

## Key Facts
- Developed by Svetlana in 1974 with research and development qualifiers
- Used in Elektronika C5 microcomputers
- Complies with Soviet integrated circuit designation standards
- Forms part of the integrated circuit series class
- Subclass of random-access memory, read-only memory, and PMOS logic
- Connects with 536 series and 592 series integrated circuits
- Has a sitelink count of 1 and commons category presence
- Described at URL http://www.155la3.ru/k535.htm in Russian
- Features 8kbit, 400kHz mask ROM specifications
- Manufactured by Svetlana

## FAQs
### Q: What were the 535 series integrated circuits used for?
A: The 535 series integrated circuits were pMOS memory chips used in Elektronika microcomputers, providing memory storage and processing capabilities for Soviet-era computing systems.

### Q: Who manufactured the 535 series integrated circuits?
A: The 535 series integrated circuits were manufactured by Svetlana, a Soviet electronics manufacturer, and developed in 1974.

### Q: What type of memory technology do the 535 series use?
A: The 535 series integrated circuits use pMOS (positive-channel metal-oxide semiconductor) technology and include mask ROM with 8kbit capacity operating at 400kHz.

## Why It Matters
The 535 series integrated circuits represent an important chapter in Soviet computing history, demonstrating the USSR's capability to develop and manufacture semiconductor technology for domestic computing needs. These pMOS memory chips enabled the creation and operation of Elektronika microcomputers, which were crucial for education, research, and various applications in the Soviet Union. The development of such integrated circuits showcased Soviet technological independence in the face of Western semiconductor dominance and contributed to the advancement of computer technology in Eastern Bloc countries. The 535 series, along with its connections to other series like the 536 and 592, formed part of a comprehensive ecosystem of Soviet integrated circuits that powered everything from consumer electronics to industrial and military applications.

## Notable For
- First pMOS memory series developed by Svetlana for Elektronika microcomputers
- Compliance with Soviet integrated circuit designation standards
- Integration of mask ROM technology with 8kbit capacity at 400kHz
- Connection to multiple integrated circuit series (536 and 592)
- Development during the early 1970s Soviet semiconductor boom

## Body
### Development and Manufacturing
The 535 series integrated circuits were developed by Svetlana in 1974, marking a significant achievement in Soviet semiconductor technology. The development process included specific research and development qualifiers, indicating substantial engineering effort behind these components.

### Technical Specifications
These integrated circuits utilize pMOS technology and include mask ROM variants with 8kbit capacity operating at 400kHz. The pMOS technology represents a specific approach to semiconductor design that was particularly suited to Soviet manufacturing capabilities of the era.

### Applications and Usage
The primary application for the 535 series was in Elektronika C5 microcomputers, where they provided essential memory and processing functions. This integration into microcomputers demonstrates the practical application of Soviet semiconductor technology in computing systems.

### Series Relationships
The 535 series maintains connections with both the 536 series and 592 series integrated circuits, suggesting a broader ecosystem of compatible components. This interconnectedness would have been crucial for system designers working with Soviet-era computing hardware.

### Documentation and Legacy
The 535 series is documented at http://www.155la3.ru/k535.htm in Russian, providing technical specifications and historical context. The presence of a commons category and sitelink count indicates ongoing interest in these components among electronics enthusiasts and historians.

## References

1. [Source](http://www.155la3.ru/k535.htm)