I cleaned my keyboard yesterday. I didn’t take many pictures in the process while I was doing it, but I have before and after images to share.
Before I tell you how I did it, let me tell you that it is not worth. The keys are sticking more than they did before. It takes more time for the keys to release back to its original state and this reduces the typing speed. I enjoy typing on new laptop keyboards. They are very soft to press and make a dull clicking sound which is satisfying to hear. This old TVS keyboard now makes multiple sounds. Either too sharp, or too dull, or non-existent. Space bar squeaks sometimes.
So, how I cleaned my TVS Gold Keyboard? Well, I took out the keys first, then took some warm water in a plastic tumbler and mixed a tiny amount of cleaning solution (I have a Amway LOC. Very nice for mild application.). One by one I took them out and brushed them with an old tooth-brush. Once done, I took a towel covered the keys neatly into the towel so that the towel would absorb all the water. While I let the keys dry, I went out in the balcony with keyboard in one hand and a toothbrush in another. I held the keyboard upside down and brushed every corner of it. Holding it upside down ensured that the dust would fall right out. It did.
Then, with the help of a cloth and some more solution made from the LOC, I cleaned the easily accessible surface of the keyboard. It took away all the grime and dust away in one swipe. Next, I took Q-tips and tried cleaning around the blue key holders. I believe this is the reason why some of my keys have gone hard now. I think the fibres dislodged from the tips and settled between the keys.
At the end of the exercise, I observed the dried out keys closely and was pleasantly surprised with the results. I never thought I would be able to restore the keys to their original looks. Even if the keys feel crappy, at least I know that I am typing on a clean keyboard.
CA Final Stuff
I was able to devote some time in the morning to studying. I tried to make the most of it. I read enough to learn about Cost of Capital, Cost of Debt Capital and Cost of Equity capital. Although equity capital is still remaining.
To find out the cost of debt capital, you need to find out the rate of risk free bonds for an equal duration to that of your company’s debt. Then add to it with the default premium which increases with your increasing debt.
Two things here. While everything is good in theory. From where do you get the rate of risk free bonds? Answer: You can find 10 year India bond rates here.
Second, how do you find out the default premium? I hope this is answered somewhere ahead in the book.
Finding out cost of equity capital is more difficult and there is no direct formula to that. You just need to compare the returns available from other companies and take that as Cost of Equity. Remember that the rates reflected by Cost of Equity and Cost of Debt (or Weighted Average Cost of Capital jointly) represent the minimum return expected by the shareholders. Pay them this, or else they will go with their money some place else.