Choosing a Language. 1  1. Choose a programming language. Computer programming is done as essentially a set of written instructions that the computer follows (also known as binary coding). 2  2. Consider C, C++, C# and related languages. These languages are mainly used for creating standalone computer applications such as games.
To continue the earlier example of the window fan, if energy costs 17 cents/kWh in your area, running the fan as estimated earlier for one year will cost you approximately 1.25 (kWh per day) * 365 (days--the time period) * .17 (cost of energy/kWh) = about $77.56 per year if you use the fan every day.o continue the earlier example of the window fan, if energy costs 17 cents/kWh in your area, running the fan as estimated earlier for one year will cost you approximately 1.25 (kWh per day) * 365 (days--the time period) * .17 (cost of energy/kWh) = about $77.56 per year if you use the fan every day.
Divide the result by 1,000 to convert watts to kilowatts. So for example, if your large window fan is rated at 250 watts and you use it 5 hours a day, its kWh use per day is 250 (watts) * 5 (hours used per day) / 1,000 (to change watts into kilowatts) = 1.25 kWh per day.. Multiply the unit's kWh/day by the number of days you'd use it during the period you'd like to calculate. So to estimate an appliance's energy use in kWh per month, multiply its kWh/day by 31 (or 28, 29 or 30 depending on how many days there are in the month you want to measure).