Texas Instruments TI-34 Multiview
The Texas Instruments TI-34 Multiview is a scientific calculator with a 4-line display. This allows you to make multiple calculations at the same time and compare your results. This way, you have a clear overview when making complex calculations. You can provide this calculator with electricity from solar energy or a battery. This battery is included by default. The calculator automatically switches off when you're not using it. This makes your batteries last longer.