The reason for the cells to lose their state over time is the usage of capacitors to store the charge.

Explanation:
When it comes to storing binary data, electronic devices commonly use memory cells. These cells are responsible for holding the state of a bit, which can be either a 0 or a 1. However, over time, these cells can lose their state, resulting in a loss of data. One of the main reasons for this is the usage of capacitors to store the charge.

Capacitors and Charge Storage:
Capacitors are electronic components that can store and release electrical charge. They consist of two conductive plates separated by an insulating material known as a dielectric. When a voltage is applied across the plates, charge accumulates on them. The amount of charge stored by a capacitor is directly proportional to the voltage applied.

Capacitor Leakage:
One of the inherent characteristics of capacitors is that they have a tendency to leak charge over time. This leakage occurs due to imperfections in the dielectric material and other factors. As a result, the charge stored by the capacitor gradually dissipates, leading to a loss of data stored in the memory cells.

Impact on Memory Cells:
In electronic memory systems, each bit is typically stored in a memory cell, which often consists of a capacitor and a transistor. The capacitor holds the charge representing the bit state, while the transistor controls the flow of charge into and out of the capacitor.

When the capacitor leaks charge and loses its stored voltage, the memory cell can no longer maintain the intended bit state. As a result, the data stored in the memory cell becomes corrupted or lost. This phenomenon is known as data decay or data retention failure.

Minimizing Data Loss:
To minimize the impact of charge leakage and data loss, various techniques are employed. One common approach is to periodically refresh the memory cells by rewriting the data. This refresh operation involves reading the data from the memory cell, amplifying it, and then rewriting it back to the same cell. This process replenishes the charge in the capacitor, compensating for the leakage and ensuring the data remains intact.

Conclusion:
In summary, the reason for memory cells losing their state over time is primarily due to the usage of capacitors to store the charge. The inherent characteristics of capacitors, such as charge leakage, lead to a gradual dissipation of the stored charge, resulting in data decay and potential data loss. Refresh operations are employed to mitigate this issue and maintain the integrity of the stored data.