Bipolar RAM primarily utilises which type of transistor?

Bipolar RAM and Its Use of BJTs

Bipolar RAM relies on the switching capabilities of BJTs to store and retrieve data. Each memory cell in a bipolar RAM is typically composed of a combination of BJTs configured in such a way that they can represent a binary state (0 or 1). When a specific memory cell is accessed, the BJTs in that cell switch states, either allowing or blocking the flow of current, which corresponds to reading or writing data.

Advantages:

• High Speed: The primary advantage of Bipolar RAM is its extremely fast switching speed, which makes it suitable for time-critical applications.
• Reliability: Bipolar RAM is robust and reliable in performance, especially in environments requiring consistent, high-speed data access.

Disadvantages:

• Power Consumption: BJTs consume more power compared to other types of transistors like MOSFETs, making bipolar RAM less energy-efficient.
• Cost: The manufacturing cost of bipolar RAM is higher due to the complexity of BJTs and their associated circuitry.

Applications: Due to its high speed, bipolar RAM is commonly used in specialized computing systems, such as high-performance processors, military-grade devices, and certain types of industrial controllers.

Correct Option Analysis:

The correct option is:

Option 4: BJTs

This option is correct because Bipolar RAM is explicitly designed around the use of Bipolar Junction Transistors (BJTs). These transistors are known for their high-speed switching capabilities, which is a defining characteristic of bipolar RAM. The use of BJTs is what gives Bipolar RAM its speed advantage over other types of memory technologies.