(a) Supply the names of the inventors of the following devices: DEVICE NAME OF INVENTOR Analytical Engine Mechanical Digital Calculator Slide Rule Punched C...

Answer Details

(a) Inventors of the listed devices.

Notes: Charles Babbage is also called the "father of the computer". Blaise Pascal built the first mechanical digital calculator (the Pascaline). William Oughtred invented the slide rule. The punched card for data processing is credited to Herman Hollerith (Joseph Marie Jacquard earlier used punched cards to control his weaving loom, so Jacquard is also accepted).

(b)(i) An input device is any hardware component used to enter data, instructions or signals into a computer for processing.

(b)(ii) Four input devices:

1. Keyboard
2. Mouse
3. Scanner
4. Microphone

(Other acceptable input devices: joystick, light pen, webcam, barcode reader, touch screen.)