Brainstorming the pros and cons of upgrading versus replacing a set of ten desktop computers

a. coworkers learn the ins and outs of the new computers purchased for the sales team
b. upgrading all desktop computers with better internal memory
c. deciding it's time to purchase new computers for a set of eight-year-old laptops used by doctors in a hospital
d. troubleshooting computers that are running word-processing software incorrectly
e. analyzing a computer with a damaged motherboard, and deciding it is time to replace the computer
f. installing software packages on the new desktop computers purchased for a company’s graphic design employees