ARM processor and its Features
Pre-Requisite: Advanced RISC Machine (ARM) Processor
Advanced RISC Machine (ARM) Processor is considered to be a family of Central Processing Units that are used in music players, smartphones, wearables, tablets, and other consumer electronic devices.
Advanced RISC Machines create the ARM processor architecture, hence the name ARM. This needs very few instruction sets and transistors. It is very small in size. This is the reason that it is a perfect fit for small-size devices. It has less power consumption along with reduced complexity in its circuits.
They can be applied to various designs such as 32-bit devices and embedded systems. They can even be upgraded according to user needs.
ARM Started With Microcomputing
The applications of the ARM Process start with getting knowledge of the ARM Processor’s history. Before ARM, x86 processors were used, which were launched in 1978. Whenever we remove the predefined instructions like complex instructions and hard-to-implement instructions, the remaining instructions take less power and pace and run faster, this is called Reduced Instruction Set Computer (RISC) Architecture. x86 is a Complex Instruction Set Architecture (CISC).
What Makes an ARM Architecture Valuable?
One of the most common electronic architectural designs in the market is Advanced RISC Machine Architecture, even better than x86, which is very common in the server market. ARM Architecture is widely used in smartphones, normal phones, and also in laptops. Though x86 processors have optimized performance ARM Processor gives cost-effective processors with small size, takes less power to run, and also gives better battery life.
ARM Processor is not only limited to mobile phones but is also used in Fugaku, the world’s fastest supercomputer. ARM Processor also gives more feasibility to designs of hardware designers and also gives control to designer’s supply chains.
Features of ARM Processor
- Multiprocessing System
- Tightly Coupled Memory
- Memory Management
- Thumb-2 Technology
- One-Cycle Execution Time
- Pipelining
- A large number of Registers
Difference between ARM and x86
The differences between ARM and x86 are described below.
| ARM | x86 |
|---|---|
ARM uses Reduced Instruction Set Computing Architecture (RISC). | x86 uses Complex Instruction Set Architecture (CISC). |
ARM works by executing single instruction per cycle. | x86 works by executing complex instructions at once and it requires more than one cycle. |
Performance can be optimized by a Software-based approach. | Performance can be optimized by Hardware based approach. |
ARM processors require fewer registers, but they require more memory. | x86 processors require less memory, but more registers. |
Execution is faster in ARM Processes. | Execution is slower in an x86 Processor. |
ARM Processor work by generating multiple instructions from a complex instruction and they are executed separately. | x86 Processors work by executing complex statements at a single time. |
ARM processors use the memory which is already available to them. | x86 processors require some extra memory for calculations. |
ARM processors are deployed in mobiles which deal with the consumption of power, speed, and size. | x86 processors are deployed in Servers, Laptops where performance and stability matter. |
Advantages of ARM Processor
- ARM processors deal with a single processor at a time, which makes it faster and it also consumes lesser power.
- ARM processors work in the case of a multiprogramming system, where more than one processor is used to process information.
- ARM processors are cheaper than other processors, which makes them usable in mobile phones.
- ARM processors are scalable, and this feature helps it in using a variety of devices.
Disadvantages of ARM Processor
- ARM processors are not stable with x86 processors, and due to this, they cannot be used in Windows Systems.
- ARM processors are not capable of very high performance, which limits them to a variety of applications.
- ARM processor execution is a little hard, which requires skilled programmers to use it.
- ARM processor is inefficient in handling Scheduling instructions.
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