Computer Hardware Devices

CRT (Cathode Ray Tube) is a display technology used in traditional monitors and TVs. It uses vacuum tubes to display images by firing electrons at a phosphorescent screen. CPUs are processors. Printers produce paper output. Scanners digitize documents.

Common mouse tracking technologies include mechanical (ball mouse), optical (LED or laser tracking), and optical-mechanical (combination). Motorized is not a recognized mouse technology - mice are not motorized devices.

A graphical user interface(GUI) is a human computer interface that uses windows, icons and menus and which can be manipulated by a mouse.

The connector type (USB, PS/2, wireless) determines if the mouse is physically compatible with your computer. Drivers (A) can be installed, cord length (B) can be extended, and buttons (D) vary by preference, but the wrong connector won't work at all.

USB devices receive power through the USB cable itself from the computer's power supply. Low-power devices don't need separate power cables or external adapters.

The keyboard remains the most fundamental and widely used input device for computers, used for text entry, commands, and navigation. While mice are common, the keyboard is essential for most computing tasks and is present on virtually every computer setup. UPS is battery backup, CPU is processing, not input.

This question is poorly worded. Options A (CRT), B (Monochrome), and C (RGB) are all specific types or technologies of monitors, while D (Video display) is the general functional category. 'Video display' is the broader term that encompasses what a monitor does. The question asks for a term 'related to' monitors, making the general category the best answer.

COM (Computer Output Microfilm) is an output technology that stores computer-generated data on microfilm, making it an output device. CRT monitors, optical scanners, and voice recognition systems are all input devices. The question asks which is NOT an input device, and COM is the only output technology listed.

This device in a computer transfers data such as handwritten text, images, photographs, posters and magazine pages into the computer.

This is an input device used to record images in a digital form, which can be stored in a computer.

The computer mouse was originally developed at Xerox's Palo Alto Research Center (PARC) in the 1970s, though the original concept was invented by Douglas Engelbart at Stanford Research Institute. Xerox PARC refined and popularized the mouse technology as part of their groundbreaking work on graphical user interfaces.

A keyboard is definitively an INPUT device, not an output device (like monitors or printers). The question asks for the FALSE statement, and Option B falsely claims keyboard is an output device. Option A is true (keyboard IS input). Option C is true (keyboards type text). Option D is true (keyboards come in wired/USB and wireless variants).

The question asks for the FALSE statement. Option B 'Optical mouse has no wheel' is FALSE - optical mice commonly DO have scroll wheels for navigation. Option A is true (optical mice can be wireless). Option C is true (optical mice can have wires AND wheels). Option D is false but less clearly wrong than B. The clearest false statement is B.

To connect a mobile phone to computer, both hardware interface and software are needed. Option B is TRUE - you need physical connection (data cable/USB port) or wireless (Bluetooth/dongle), AND the computer must support that interface. Option A is false (if using Bluetooth, computer needs Bluetooth hardware too). Option C is false (drivers/software usually needed). Option D is irrelevant (calls not needed for file transfer).