Table:
text: List of Macintosh models grouped by CPU type
Motorola 68k
Motorola 68000
Processor Model Clock_speed_MHz L1_cache_bytes Introduced Discontinued
MC68000 Lisa 5 — January 1983 January 1984
MC68000 Lisa 2 5 — January 1984 January 1985
MC68000 Macintosh 8 — January 1984 October 1985
MC68000 Macintosh 512K 8 — September 1984 April 1986
MC68000 Macintosh XL 5 — January 1985 April 1985
MC68000 Macintosh Plus 8 — January 1986 October 1990
MC68000 Macintosh 512Ke 8 — April 1986 September 1987
MC68000 Macintosh SE 8 — March 1987 August 1989
MC68000 Macintosh SE FDHD 8 — August 1989 October 1990
MC68000 Macintosh Classic 8 — October 1990 September 1992
MC68HC000 Macintosh Portable 16 — September 1989 October 1991
MC68HC000 PowerBook 100 16 — October 1991 August 1992

Question: What is the lowest clock frequency (MHz) since January 1986 as introduced in the Macintosh model list grouped by CPU type?

Question: List of Macintosh models grouped by CPU type, starting with April 1986, what is the lowest clock frequency (MHz)?

Question: List Macintosh models grouped by CPU type. What processor does the Powerbook 100 model have?

Question: When was the Lisa 2 model discontinued in the Macintosh model list grouped by CPU type?