The Macintosh's minimal <answer>memory</answer> became apparent, even compared with other personal computers in 1984, and could not be expanded easily. It also lacked a hard disk drive or the means to easily attach one. Many small companies sprang up to address the <answer>memory</answer> issue. Suggestions revolved around either upgrading the <answer>memory</answer> to 512 KB or removing the computer's 16 <answer>memory</answer> chips and replacing them with larger-capacity chips, a tedious and difficult operation. In October 1984, Apple introduced the Macintosh 512K, with quadruple the <answer>memory</answer> of the original, at a price of US$3,195. It also offered an upgrade for 128k Macs that involved replacing the logic board.
What part of the Mac's could not be expanded easily in 1984?
memory