http://megalextoria.blogspot.com/2017/06/macrotech-apple-ii.html
In the 1980s, the various 8-bit computers available each had their own advantages and disadvantages. The Apple II was on the expensive side but one advantage it had was that it was easily expandable. Like today's PCs, most Apple II models had several expansion slots that various cards could be plugged into to provide additional functionality.
This particular ad is from a company called Macrotech and showcases several expansion cards for the Apple II, most of them memory expansion related. They would add anywhere from 16k to 128k to the existing system memory. Later on, memory expansion for the Apple II would become a little more standardized but in 1983 certain memory expansion cards tended to only work with certain software.
This ad is from the March 1983 issue of inCider.
Thanks for stopping by and check out some of my other recent retrocomputing posts below!
Compute!'s Apple (Spring/Summer 1987)
https://steemit.com/retrocomputing/@darth-azrael/compute-s-apple-spring-summer-1987
Mean Streets (Commodore 64)
https://steemit.com/retrogaming/@darth-azrael/mean-streets-commodore-64