Apple macintosh plus 서비스 매뉴얼

 

 Specifications

Memory - 3

 

Memory

 

1 MB, expandable to 4 MB (150 ns or faster SIMMs)

 

128K 

 

CMOS custom chip with 4.5 V, user-replaceable battery backup 

(includes 256 bytes of memory; remembers system 

parameters even with the machine switched off)