Draw and label an IS-LM diagram to illustrate the effect upon income,interest rate,consumption and investment for each of the following events. Briefly explain each effect.

a. After the invention of high speed computer chip, many firm decide to upgrade their computer system.

b. Due to an increase in credit card fraud there is an increase in the frequency in cash transaction.

c. A best-selling book entitled "How to Retire Rich"convinces the public to increase the percentage of their income developed to saving.