1. ;Electro-acoustic memory : Delay line memory used mercury to store information. 2. Most early computers used some form of serial memory ( primarily delay line memory ). 3. Binary digits in a delay line memory pass through the line and are fed back to the beginning. 4. Delay line memory requires constant refreshing because the data is actually stored as a signal in a transmission line.5. Delay line memory was dynamic volatile, cycle sequential read / write storage, and was used for primary storage.6. Delay line memory would be limited to a capacity of up to a few hundred thousand bits to remain efficient.7. It had a words of 45 bits each ( plus one parity bit ), using mercury delay line memory . 8. FLAC II abandoned mercury delay line memory in favor of a faster and more versatile 4096-word magnetic core memory. 9. The main memory consisted of tanks of liquid mercury implementing delay line memory , arranged in 1000 words of 12 alphanumeric characters each. 10. The next significant advance in computer memory came with acoustic delay line memory , developed by J . Presper Eckert in the early 1940s.
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