# 161 series integrated circuits

> early Soviet series of pMOS logic

**Wikidata**: [Q120135331](https://www.wikidata.org/wiki/Q120135331)  
**Source**: https://4ort.xyz/entity/161-series-integrated-circuits

## Summary
The 161 series integrated circuits are an early Soviet series of pMOS (P-channel Metal-Oxide-Semiconductor) logic. Originating from the Soviet Union, this series belongs to the broader class of integrated circuits and complies with the Soviet integrated circuit designation system. These components were utilized in measuring instruments and featured dual in-line packaging.

## Key Facts
*   **Classification**: The 161 series is an instance of an integrated circuit series and a subclass of PMOS logic and integrated circuits.
*   **Origin**: The country of origin is the Soviet Union.
*   **Technology**: The series represents an early implementation of pMOS logic.
*   **Designation**: It complies with the standard Soviet integrated circuit designation system.
*   **Packaging**: The circuits utilize dual in-line packages.
*   **Application**: These integrated circuits are used in measuring instruments.
*   **Structure**: The series consists of model integrated circuits sharing the same part prefix.

## FAQs
### Q: What type of logic technology did the 161 series use?
A: The 161 series utilized pMOS logic (P-channel Metal-Oxide-Semiconductor). This classifies the series within the early generations of MOS integrated circuit technology.

### Q: What physical packaging standard was used for these circuits?
A: The 161 series integrated circuits were manufactured using dual in-line packages. This is a standard electronic component package format.

### Q: What was the primary application for the 161 series?
A: According to structured data, the 161 series was designated for use in measuring instruments.

## Why It Matters
The 161 series integrated circuits represent a distinct phase in the history of Soviet electronics, specifically marking the era of early pMOS logic adoption. As a subclass of integrated circuits, these components played a role in the miniaturization and advancement of electronic hardware within the Soviet Union. Unlike later technologies that offered higher speeds or lower power consumption, early pMOS logic was instrumental in the initial transition from discrete components to integrated circuits in industrial applications.

This series is significant for historians and collectors of vintage computing and electronic hardware because it adheres to the specific Soviet integrated circuit designation system, which provides insight into the standardization and categorization methods used in the USSR electronics industry. By serving the measuring instrument sector, the 161 series contributed to the development of precision scientific and industrial equipment during its operational lifetime. Its existence highlights the parallel development of semiconductor technologies in the Soviet Union compared to Western counterparts.

## Notable For
*   **Early pMOS Logic**: Being recognized specifically as an early Soviet series of pMOS logic.
*   **Soviet Standardization**: Strict compliance with the Soviet integrated circuit designation system.
*   **Industrial Application**: Specific association with measuring instruments rather than general computing.
*   **Heritage**: Direct lineage as a subclass of the generic integrated circuit class.

## Body
### Technical Classification
The 161 series is formally classified as a subclass of **PMOS logic** and **integrated circuits**. It is defined as a **model series of integrated circuits** sharing the same part prefix. The technology relies on pMOS structures, which involve p-channel enhancement-mode transistors.

### Design and Compliance
The series was developed in the **Soviet Union** and adheres strictly to the **Soviet integrated circuit designation** conventions. This nomenclature system organizes integrated circuits by series numbers, with "161" identifying this specific group of pMOS logic devices.

### Physical Properties and Use
Physically, the components within the 161 series are characterized by their use of **dual in-line packages** (DIP), a widely used standard for electronic components featuring two parallel rows of electrical connecting pins. Functionally, the series is cited for its application in **measuring instruments**, indicating its role in test and measurement hardware.

### Related Entities
*   **Integrated Circuit**: The parent class of electronic circuits formed on a flat piece of semiconductor material.
*   **Integrated Circuit Series**: The related class denoting model series sharing the same part prefix.