What is Regenerative capacitor memory?

Regenerative capacitor memory is a type of computer memory that uses the electrical property of capacitance to store the bits of data. Because the stored charge slowly leaks away, these memories must be periodically regenerated to prevent data loss.

Other types of computer memory exist that use the electrical property of capacitance to store the data, but do not require regeneration. Traditionally these have either been somewhat impractical or are considered to be suitable only as read-only memory since writing data takes significantly longer than reading.