A computer works on the principle of:, Thinking, Input → Process → Output, At Guessing, Drawing, Which unit performs calculations and logical decisions?, CPU, Keyboard, Monitor, Printer, Which memory is temporary and loses data when power is off?, ROM, Hard Disk, RAM, Pendrive, Which key is used to delete characters to the left of the cursor?, Enter, Backspace, Delete, Shift, The physical parts of a computer are called:, Hardware, Software, Data, Program, Which part stores all programs and files?, Monitor, Harddisk, Keyboard, Mouse, Which device is both an input and output device?, Printer, Monitor, Touch Screen, Keyboard, Which device converts digital signals into sound?, Monitor, Speaker, Printer, Scanner, Which computer is most powerful?, Super Computer, Desktop, Laptop, Tablet, Which storage device is portable?, CD Drive, Pen Drive, Hard Disk, RAM.

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