CPU

1. OUTPUT

1.1. Monitor

1.1.1. Benefits

1.1.1.1. Ability to choose size of monitor

1.1.1.2. Able to view information being input (GUI)

1.1.2. Challenges

1.1.2.1. Consumes a lot of power

1.1.2.2. Radiation

1.2. Printer

1.2.1. Benefits

1.2.1.1. Ability to print a hard copy of anything seen on the screen

1.2.1.2. Easier to read a printed document than a computer screen

1.2.2. Challenges

1.2.2.1. Expensive to operate - Cost of ink and paper

1.2.2.2. Environmental problems - Many trees getting cut for paper

2. INPUT

2.1. Keyboard

2.1.1. Benefits

2.1.1.1. Ability to input data easily

2.1.2. Challenges

2.1.2.1. Difficult to use for people who have certain disabilities

2.2. Touchpad

2.2.1. Benefits

2.2.1.1. Comfortable to use

2.2.1.2. Easy to control

2.2.2. Challenges

2.2.2.1. Not necessarily accurate

2.2.2.2. Very small surface