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Computers

A computer is a digital device, but performs tasks like working with data, operating on the basis of instructions and storing results at unimaginable speed, all of which combined to make it one of the most revolutionary inventions in human history. Computers have come a long way since first being developed as mechanical devices (for example the abacus) with modern computers driving education, businesses and global communication. They consist of hardware (the CPU, the memory, and input/output devices) as well as software (programs that work together to solve problems and automate tasks). They have revolutionized society, allowing knowledge at your fingertips and connecting billions of people across the globe — yet also punctuating the digital age with challenges of cybersecurity threats, digital divides and adding to environmental strains from e-waste.