https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:computer/x0c8b40bd4b242f0b:input-and-output-devices/e/input-and-output-devices 2026-04-08T01:15:04.085520103Z Input and output devices Let's solve some problems to better understand input and output devices. Aakash Bagga exercise https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:computer/x0c8b40bd4b242f0b:input-and-output-devices/e/functions-of-various-keys 2025-02-13T13:42:33.753834602Z Functions of various keys Let's recall the functions of various keys and buttons by solving this exercise. Revathi exercise https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:computer/x0c8b40bd4b242f0b:computer-software/e/types-of-computer-software 2025-02-13T13:42:33.753834602Z Types of computer software Let's look at the different types of computer softwares. Revathi exercise