Engineering Inside Computer Keyboards

How many critical parts are there inside a basic computer keyboard?

• 5

• 8

• 10

• 12

What are the 8 critical components inside the inexpensive keyboard?

• Rubber sheet, plastic sheets, batteries, PCB

• Rubber sheet, domes, plastic sheets, conductive wires

• Plastic casing, screws, batteries, microprocessor

• Rubber dome, metal contacts, stem and slider, LED

What is the main idea behind the functioning of the keyboard matrix?

• Monitoring the processor on the PCB

• Sending 3 volts along each row and column

• Scanning 3 volts along each column to determine the pressed key

• Applying 3 volts to all the traces on the top sheet

What is the main mechanism inside a mechanical key that creates a clicking sound when pressed?

• Rubber dome pushing the conductive circle

• Metal contacts hitting each other

• Spring pushing the slider

• LED under each key

What is the purpose of the scissor switch mechanism in laptop keyboards?

• To create a tactile feel when pressed

• To allow the keyboard to have a lower profile

• To engage the metal contacts

• To monitor the processor on the PCB

What is the main focus of Keysight's virtual event, Keysight World: Live from the Lab?

• Analyzing IoT devices

• Exploring batteries and DC to DC converters

• All of the above

• Hands-on design analysis and Q and A sessions

What tool was used to reverse engineer the keyboard?

• Oscilloscope

• Screwdriver

• Soldering iron

• Multimeter

What is the main difference between the inexpensive keyboard and the mechanical keyboard?

• Number of keys

• Tactile feel and clicking sound

• Size of the PCB

• Cost

What is the maximum number of keys that can be supported by the keyboard matrix?

• 132

• 100

• 111

• 150

What is the main purpose of the planar antennas in the mechanical keyboard?

• To create attractive designs

• To send data to the transceiver

• To monitor the processor on the PCB

• To determine the pressed key