Over the past five episodes, we’ve worked up from text-based teletype interfaces to pixelated bitmapped graphics.

在过去的五集中，我们已经从基于文本的电传打字界面发展到像素化位图图形。

The flexibility of bitmapped graphics opened up a whole new world of possibilities for interactive computing, but it remained expensive for decades.

位图图形的灵活性为交互式计算开辟了一个全新的可能性世界，但几十年来它仍然很昂贵。

The demo was 90 minutes long and demonstrated many features of modern computing: bitmapped graphics, video conferencing, word processing, and collaborative real-time editing of documents.

该演示长达 90 分钟，展示了现代计算的许多功能：位图图形、视频会议、文字处理和文档的协作实时编辑。