Day 4 Calculator #DailyUI

I still remember my first Casio calculator, my grandpa bought for me. It felt so good when you saw your classmates struggled with their lame puzzled misleading calculator, and my Casio is just working so smoothly, self-evident, with the clear self-explanatory instruction that you don't even need to read the manual. So functional and efficient. When others were still trying to figure out where is "sin/cos" bottom, I already got my result and became the queen of Math :P .
I removed some buttons on my design, compare to the real product in reality. For instance, "on" button will be unnecessary, since once users open the page, the virtual calculator is automatically on. And I removed the up, down, left, right arrows buttons, since users will use the cursor on the virtual calculator.
I reserved some empty bottom for future changes.
Back to my story, by then the Casio calculator was not cheap, I said to my grandpa that the normal low price one should be fine (not from a rich family). But he insisted to buy me a good decent Casio calculator and saying "You will bring this calculator to your exam, imagine if it's broken during your exam, you will be so panic and helpless, I won't let it happen to you. It must be a good Casio".
Ever since he passed away, nobody ever holding my back like this anymore.
Glad I can share my story here, and design this virtual calculator with my precious memory.