Definition
An emulator is a software or hardware tool that allows one computer system (the host) to mimic the functionality of another computer system (the guest).
This allows the host system to execute the guest system’s software, tools, peripheral devices, and other components.
There are different types of emulators, each designed to replicate a specific environment or resource, such as hardware, software, central processing units, or operating systems. However, in most cases, hardware architecture is simulated to generate a host system-like environment.
Components of Emulators
- CPU emulator.
- Memory sub-system emulator.
- Various input/output device emulators.
Benefits of Emulators
- They allow users to continue using unsupported game consoles.
- They’re more desirable than costlier software and hardware alternatives.
- They can be used for operating systems and gaming installation.
Limitations of Emulators
- Because of the hardware limitations, emulators are often slower than the system they want to simulate.
- Unauthorized emulators may pose legal risks.
- Malicious emulators can infect your computer with malware.
Types of Emulators
- Terminal emulators emulate computer terminals. A graphical terminal or command line allows a host computer to communicate with another system.
- Printer emulators are programs executed on the printer and enable you to use various command languages.
- A game console emulator allows a computer to execute console games on its platform. It offers extra features like improved performance, extensive compatibility, and crisper clarity.
- Full system emulators simulate every aspect of the original hardware, including the basic input/output system (BIOS), central processing unit (CPU), chipset, and interrupts.
- CPU emulators simulate physical central processing units. The most basic CPU emulator is an interpreter that tracks program code execution.
- Functional emulators execute a program originally written in symbolic assembly language instead of binary machine code.
- Mobile emulators simulate hardware and software environments on desktop computers or cloud-based testing platforms.