In this blog post, we’ll use the “Meister High School” analogy to explain the concept and advantages of modular processors in simple terms.

What is a Meister High School?

“Meister” means “master craftsman” in German and refers to a system that trains students at the high school level in specialized industrial skills and knowledge so they can be immediately deployed in the workforce upon graduation. Unlike highly educated individuals who acquire a broad liberal arts education in college, Meister education focuses on developing practical skills tailored to specific job roles. Society thus requires a compromise between general knowledge and highly specialized practical skills, and Meister High Schools aim to strike precisely that balance.

All the electronic devices around us are small computers

Think of MP3 players, electronic dictionaries, cell phones, TVs, internet routers, cable TV set-top boxes, and laptops. Although they vary in size and purpose, most of them are “computers” with the same basic structure. While older analog TVs used a power switch to directly connect circuits and send current to the cathode ray tube, today’s TVs are small computers that read an operating system from internal storage, boot up, run programs, and display images on the screen. The fact that we can use various apps on smartphones also means that functions like calling and texting are software running on top of an operating system.

Two Types of Processors: General-Purpose CPUs and Application-Specific Integrated Circuits (ASICs)

Electronics manufacturers must decide what type of computing device to use in their products. General-purpose processors found in desktops and laptops are versatile and high-performance, but they are large, consume a lot of power, and are expensive. In contrast, application-specific integrated circuits (ASICs), designed for specific product purposes, handle only the necessary functions very efficiently, resulting in smaller size and lower power consumption; however, they lack flexibility and are costly to modify. If the former is like a highly educated professional capable of adapting to various tasks, the latter is similar to a master craftsman who has become highly skilled through years of experience in a specific trade.

What is a configurable processor?

A configurable processor is a design approach that sits midway between general-purpose and application-specific integrated circuits. Much like an apartment where you can knock down walls to reconfigure the layout, it retains basic functionality while allowing parts of its structure to be reconfigured as needed to optimize it for specific tasks. Manufacturers can purchase configurable processors, which are smaller and consume less power than general-purpose processors, and then combine the Lego-like components provided by the processor to add the specialized features required for their products. This allows them to efficiently enhance only the core functions of the product while maintaining basic capabilities, and design changes or upgrades can be addressed simply by reconfiguring the system without replacing existing components.

Configurable Processors Explained Through Instruction Set Extensions

Configurable processors boost target performance by adding or enhancing “instructions,” the basic units of operation for a CPU. For example, general-purpose processors are designed to operate by combining very small-unit instructions like “move forward 1 cm” or “rotate 1 degree,” making them fast and flexible; however, even simple tasks require long and complex sequences of instructions. In contrast, processors used in specialized devices are designed to perfectly execute specific, limited actions, such as “fetching the newspaper from the front door every morning at 6 a.m. and placing it on the dining table.” While providing general-purpose instructions as a baseline, configurable processors allow manufacturers to add high-level instructions—such as “locate the front door” or “grab an object with an arm”—tailored to the product’s purpose, thereby simplifying commands and enhancing operational reliability.

Actual Advantages and Use Cases

One reason small portable devices can smoothly play Full HD videos or Blu-ray players can efficiently handle massive movie files is the configurable processor, which selectively enhances specific functions even if the overall processing speed isn’t as fast as that of a general-purpose CPU. This approach meets industrial demands that seek both efficiency and productivity. Just as Meister High Schools cultivate talent with a balanced mix of practical skills and cost-effectiveness, configurable processors are establishing themselves as a practical solution in the semiconductor industry for balancing cost and performance.