![When I though my IBM PC (5150) was 128K short of 640K RAM, I designed and built this prototype 128K RAM expansion using parallel RAM and implemented parity checking! : r/retrobattlestations When I though my IBM PC (5150) was 128K short of 640K RAM, I designed and built this prototype 128K RAM expansion using parallel RAM and implemented parity checking! : r/retrobattlestations](https://i.redd.it/when-i-though-my-ibm-pc-5150-was-128k-short-of-640k-ram-i-v0-noa12xfroyu81.jpg?width=4032&format=pjpg&auto=webp&s=189c3dcd165f4d5773274489f81515e9f9353a4f)
When I though my IBM PC (5150) was 128K short of 640K RAM, I designed and built this prototype 128K RAM expansion using parallel RAM and implemented parity checking! : r/retrobattlestations
MTN Uganda - "640K ought to be enough for anybody." Bill Gates said in 1981 about 640K memory for computers. How much RAM does your smartphone have? | Facebook
![When I though my IBM PC (5150) was 128K short of 640K RAM, I designed and built this prototype 128K RAM expansion using parallel RAM and implemented parity checking! : r/retrobattlestations When I though my IBM PC (5150) was 128K short of 640K RAM, I designed and built this prototype 128K RAM expansion using parallel RAM and implemented parity checking! : r/retrobattlestations](https://preview.redd.it/when-i-though-my-ibm-pc-5150-was-128k-short-of-640k-ram-i-v0-kgf5kwfroyu81.jpg?width=640&crop=smart&auto=webp&s=e9dde81f2efbee106f4289ab449a0471da7d1475)