00575 a2200169 4500 Nust 20170207170053.0 Nust 621.391 Technical reference personal computer hardware reference library revised edition USA International business machines 1981. (1-22) p section 1 hardware overview(page 1-1)section 2 hardware (page 2-1)section 3 rom and system usage (page 3-1)section 4 appendices(page a-0) Almirah No.40 Shelf No.6 Technical reference ddc BK 213873 213873 0 0 ddc 0 0 NFIC MCS MCS 2016-12-12 0 621.391 MCS2282 2016-12-08 2016-12-12 BK