The UNIVAC I used recirculating acoustic Mercury delay lines for memory. Such delay lines were originally developed during WWII as part of RADAR display analog signal processing circuits to remove stationary background clutter from the screen and make it easier to identify moving targets. Several engineers hired by Eckert and Machley came from a RADAR background, so this type of memory was logical to use.
Remington Rand Corporation produced the first commercial computer, the UNIVAC, in 1951.
The first commercial computer was invented in 1964 by Engineer Pier Giorgio Perotto of Olivetti. The device was named Programma 101.
Apple
BASIC for the Altair computer
RAM (Random Access Memory).
in 1951 the first commercial computer happened
Z1
I think it was the bally astrocade
RAM
First of all you would have to determine which memory fits with the computer you have. Newegg has a memory finder tool. It will ask you all the right questions to find out which memory will be best for your computer. After finding out the best memory it will show you your best options.
Remington Rand
Computer memory