Calculator is a kind of equipment which are important to everyone. Because in everyday life we bound numbers and calculation.So today, therefore, recommend how to buy a calculator for everyone to read!The main 1. Data can be calculated, such as general will be calculated at the 12 principle. But if the machine will be calculated 16 - 18 principle. The use 2
.Power source. If it is older, it will have to put the battery AA or AAA was said, but if a new version, it will be using solar energy to almost all. The advantage is economical. But the disadvantage is not available where there is no light
3.Calculation function. To calculate mathematical formula, such as paper, Sat. many. Calculate formula a specific topic such as architect, engineering a search
4.The size, this is it like. Some people like small, portable, some like a large use clearly seen clearly, but I like it 5
.Press the button, this experiment press. Because some calculator developer very well, but the press button very difficult. The inconvenience in use. This is introduced. To experiment. You might regret later
6.To guarantee the quality, some people may not focus on this emphasis on cheap beforehand, but imagine the look. If you have important work and what the machine breaks down, it accelerate the machine, it got ruined ตอนนี้ซะ work, grow up!Don't think that buying a calculator is that it doesn't matter. Because otherwise it might create long-term problems you later. Good luck.
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