Well, it was a small pocket computer with a small keyboard.

那是一个带小键盘的袖珍电脑。

They have a small keyboard and they call a special number to speak with an operator, or an employee of the telecommunications company – the phone company.

他们有一个小键盘，可以拨打一个特殊号码与接线员或电信公司（即电话公司）的员工通话。

This is how it works: a deaf person wants to make a phone call, so that person has a small keyboard, just like the keyboard on your computer that you type on.

它是这样工作的：一个聋人想打电话，所以那个人有一个小键盘， 就像你电脑上用来打字的键盘一样。