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Computers, tablets and smartphones can do more [and / to] more things these days. Fifteen years ago, they were not powerful [plenty / enough] to store movies or play high-definition games. Computer chip technology has advanced at a [speed / fast] rate. We can now stream movies on our smartphones and store huge [amounts / amount] of data. IBM has announced it has made a significant breakthrough [in / on] microchip power. It has created chips [that / what] improve performance by 45 per cent. Its new chips also [useful / use] 75 per cent less energy. This is good [from / for] the environment, and means batteries will be more energy [deficient / efficient] . The technology could quadruple mobile phone battery life. We might only need to [charge / change] our phones every four days.

IBM has [greatly / great] improved its microchips by [reduction / reducing] their size. The tech [giant / gigantic] has created a two-nanometre chip. Computer engineers use nanometres to measure the size of chips. One nanometre is just [the / a] billionth of a metre. A chip that is 2nm in size is [incredible / incredibly] small. IBM says its 2nm processor can [store / storage] 50 billion transistors on "a chip the [large / size] of a fingernail". Computer expert Peter Rudden said: "We have seen semiconductor manufacturers [moves / moving] from 14nm to 10nm to 7nm, with 7nm [be / being] a real challenge for some." He said IBM's new chip could advance artificial intelligence (AI). The chips could also let data centres store more information. Data centres use one per cent of the world's [electricians / electricity] .