1. Many of the first video game companies that emerged around 1972 had previously been
A: board game manufacturers
B: computer manufacturers
C: children’s entertainment companies
D: pinball machine manufactures
2. Read-only memory chips are used to.
A:record high scores, and later, save slots for longer games
B: translate input from players into visual output
C: store data that cannot be modified
D: secure game code so that it can’t be copied or pirated