Algebraic computations, such as 3 + 4, or any data for that matter, are typically stored in RAM (Random Access Memory) in a microcontroller.
Here's a brief explanation of the options:
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EEPROM (Electrically Erasable Programmable Read-Only Memory): This is used for non-volatile storage, meaning it retains data even when the power is off, but it is not suitable for quick computations.
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RAM: This is used for temporary data storage and for data that the CPU needs to access quickly for computation. Thus, arithmetic operations and the corresponding data would be stored here.
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I/O Pins: These are used for interfacing with external devices and do not store data.
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CPU (Central Processing Unit): While the CPU performs computations, it does not store data itself. Instead, it uses RAM to work with data.
Therefore, the correct choice is RAM.