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May 14

Size of memory chip

I have an old memory board that has Fairchild MBM10470 chips. I want to know how much memory it has. I googled and found several places where you can order one, but none told the amount of memory it has.

How much memory does this chip hold? Bubba73 ^{You talkin' to me?} 00:32, 14 May 2022 (UTC)[reply]

This old data sheet says the MBM10470A-10 which is pin compatible with the F10470 is 4096 bit (4096 words in 1 bit) [1] Whether this applies to your chip I don't know. Nil Einne (talk) 07:07, 14 May 2022 (UTC)[reply]

Thanks, I just got a Cray-1 memory board with 32 of these chips on one side and 32 chips on the other side. So a total of 262,144 bits, 32,768 bytes, or 4,096 64-bit words. Bubba73 ^{You talkin' to me?} 23:03, 16 May 2022 (UTC)[reply]

look at modem/router load

How can we, a Windows user and a Mac user sharing a modem/wifi, see how much each device is keeping it busy? Tamfang (talk) 00:46, 14 May 2022 (UTC)[reply]

Depends on the hub. If it is designed to provide you with that info, you can probably browse to the hub address and look at the status page. If not, then you will have to run Windows Task Manager, and the Mac equivalent, and compare network usage. My hub gives me stats for data up/downloaded by each device (since the last hub restart, I think) but not any current load info. -- Verbarson ^talk_edits 12:10, 14 May 2022 (UTC)[reply]

If the modem does not display statistics, you could see how much data each computer sends through their network interfaces. Search the web for "windows data usage" - the details differ slightly by operating system version. Write down the current bytes or packets in and out, then check again later and subtract the numbers. 85.76.101.114 (talk) 11:59, 15 May 2022 (UTC)[reply]

You need a dedicated network analyser tool, such as Ethereal for Windows and Wireshark on Mac. Other alternatives for Windows here and Macs here. MinorProphet (talk) 08:05, 17 May 2022 (UTC)[reply]

Does IR night vision degrade?

Hello, it might be a peculiar question but 10 years i got an analog home CCTV system installed, these use infrared LED's to light the scene, i have noticed a degredation of the night vision over the years, i remember them being a lot brighter and clearer 10 years ago, but now they seem dark and grainy, i recently replaced a BNC connector on one that had gone bad and was spewing off EMI causing poor image quality, that's improved them a lot but the night vision is still the same, have the IR LED's actually degraded? one of the cameras is slightly newer and does seem to have better IR Night Vision then the others.

Sincerely OGWFP (talk) 20:37, 14 May 2022 (UTC)[reply]

LEDs slowly degrade. Typical quoted lifetimes are on the order of 100000 hours of operation. After 40000 hours of operation, you may very well notice some degradation. PiusImpavidus (talk) 07:34, 15 May 2022 (UTC)[reply]