Four input devices, four descriptions and four applications are shown below. Draw a line to connect each input device to its correct description. Then connect each description to its correct application. Input device barcode reader microphone pH sensor scanner Description copies paper documents and converts the text and pictures into a computer-readable form reads labels containing parallel dark and light lines using laser light or LEDs; the width of each line represents a binary code detects changes in acidity levels; data is often in analogue form device that allows audio signals to be converted into electric signals; these can be interpreted by a computer after being converted into digital form Application voice recognition reading passports automatic stock control monitor soil in a greenhouse

1. Four input devices, four descriptions and four applications are shown below. Draw a line to connect each input device to its correct description. Then connect each description to its correct application. Input device barcode reader microphone pH sensor scanner Description copies paper documents and converts the text and pictures into a computer-readable form reads labels containing parallel dark and light lines using laser light or LEDs; the width of each line represents a binary code detects changes in acidity levels; data is often in analogue form device that allows audio signals to be converted into electric signals; these can be interpreted by a computer after being converted into digital form Application voice recognition reading passports automatic stock control monitor soil in a greenhouse[6]