A computer is referred to as a programmable device because it can execute different sets of instructions, or programs, to perform various tasks. Here's why:
1. Versatility: Computers can be programmed to perform a wide range of functions by executing different programs. For example, a computer can be used for word processing, playing games, browsing the internet, or running complex simulations. This flexibility is a key characteristic of a programmable device.
2. Instruction execution: Computers follow instructions provided in a program sequentially, one after another. These instructions are written in a programming language that the computer's processor can understand. By changing the sequence of instructions or modifying the program, you can make the computer perform different tasks.
3. Reprogrammability: Unlike fixed-function devices that perform a specific task, computers can be reprogrammed to adapt to new requirements. This ability to update and change the software running on a computer makes it versatile and suitable for various applications.
4. Automation: Programming allows computers to automate tasks, making them more efficient and reducing the need for manual intervention. For example, you can write a program to automatically sort a list of names in alphabetical order, saving time and effort compared to doing it manually.
In summary, a computer is called a programmable device because it can execute different programs, follow instructions, be reprogrammed for different tasks, and automate processes, showcasing its adaptability and versatility in various contexts.
