A digital computer is an electronic device that processes data using binary code, which consists of zeros and ones. It performs calculations and executes instructions to solve problems or complete tasks. Digital computers are widely used in various applications, from personal devices like smartphones and laptops to large systems in data centers. These computers operate using components such as a central processing unit (CPU), memory, and storage. They can run software programs that allow users to perform tasks like word processing, web browsing, and gaming. Digital computers have revolutionized how we work, communicate, and access information in the modern world.