Just Starting and Have Questions

One good thing about the newer RAM designs is that the power requirements have dropped. When DDR first came out, it ran at 2.5-3v. The DDR3 memory I put in my Asus is only 1.35v, and the new DDR4 stuff is running between 1 and 1.2v. Lower power means less heat and longer battery life. Its too bad that they aren't 1 for 1 replacements. Its like CPU sockets, they keep changing the pinout.

I remember the days when I was buying 5.25" floppy drives and had to build a power supply with 12V 1.25A voltage rectifiers, one for each drive. I think the 40MB SCSI drive took 3A on the 12 and 5V lines. I would buy linear power supply boards at the surplus electronics store.

Hah! I remember a series of letters in Wireless World. Some lab had put 10 seconds of audio on a floppy disc and it was suggested that "one day we might have solid state sound storage". The next month a very serious letter stated "Not possible, it would be as big as a house and require Battersea power station to power it".

Dave.
 
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