Shortest PCs

LESS THAN 180 DAYS.
This list had been drawn from the IBM Vintage PCs table, which includes only "family one" (PC/XT, PC/AT) and PS/2 systems, and not PS/1s and PS/VPs, which were introduced in 1992. Also note that I left out all models whose exact announcement or withdrawal date is not available.

machine type	model	Announced	Withdrawn	Days
PS/2 Model 56 486SLC2	9556-KB6/-KBA	25/05/93	13/07/93	49
PS/2 Model 57 486SLC2	9557-KB6/-KBA/-KBG	25/05/93	13/07/93	49
PS/2 Model 76 486	9576-KU6/-KUA	25/05/93	13/07/93	49
PS/2 Model 77 486	9577-KNA/-KNG/-KUA	25/05/93	13/07/93	49
PS/2 Model 90 XP 486	9590-KLA/-KLG	25/05/93	13/07/93	49
PS/2 Model 90 XP 486	9590-0LA/-0LF	23/03/93	25/05/93	63
PS/2 Model 56 486SLC2	9556-QB6/-QBA	04/05/93	13/07/93	70
PS/2 Model 57 486SLC2	9557-QB6/-QBA	04/05/93	13/07/93	70
PS/2 Model 76 486	9576-QU6/-QUA	04/05/93	13/07/93	70
PS/2 Model 77 486	9577-QNA	04/05/93	13/07/93	70
PS/2 Model 90 XP 486	9590-QLA	04/05/93	13/07/93	70
Portable Personal Computer	5155-068	16/02/84	19/06/84	124
PS/2 Model 70 386	8570-A81	11/06/91	17/10/91	128
PS/2 Ultimedia Model M57 SLC	8557-255	17/10/91	25/02/92	131
PS/2 Model 95 XP 486	8595-0LF/-0MF/-0MT	28/04/92	21/09/92	146
PS/2 Model 65 SX	8565-321	30/10/90	23/04/91	175
PS/2 Model 90 XP 486	8590-0G5/-0G9	23/04/91	17/10/91	177
PS/2 Model 95 XP 486	8590-0G9/-0GF/-0JF	23/04/91	17/10/91	177

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