Completar Frases Complete the textVersión en línea Complete the text using Simple past and / or Present Perfect por Alexander Correa Ospina 1 begun changed have not evolved gotten were have created have were have become also changed not were did has have have were have started did become have paid were have Since computers first introduced to the public in the early 1980's , technology a lot . The first computers simple machines designed for basic tasks . They much memory and they very powerful . Early computers often quite expensive and customers often thousands of dollars for machines which actually very little . Most computers separate , individual machines used mostly as expensive typewriters or for playing games . Times and computers powerful machines with very practical applications . Programmers a large selection of useful programs which do everything from teaching foreign languages to bookkeeping . We are still playing video games , but today's games faster , more exciting and interactive adventures . Many computer users on the Internet and communicating with other computer users around the world . We to create international communities online . In short , the simple , individual machines of the past into an international World Wide Web of knowledg e
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