3 ms·

Almost, but the ZX80 was also using the Z80 CPU: https://en.wikipedia.org/wiki/ZX80 https://en.wikipedia.org/wiki/ZX80

• xgkickt 3y ago
  Not the first, but the Jupiter Ace always deserves a mention. For the curious: https://en.wikipedia.org/wiki/Jupiter_Ace https://en.wikipedia.org/wiki/Jupiter_Ace
• DerekL 3y ago
  And the TRS-80 before that.