Please note that this is a personal view based on my own experience and beliefs. I am not intentionally promoting any particular company. A computer is a major investment for most families and unfortunately children frequently know more about them than their parents. In the UK, most children will study information technology from primary school onwards.
Computer literacy is every bit as important as literacy and numeracy.
Most jobs will require some IT skills. Children with a computer at home do have a distinct advantage over those who do not. However, even if you cannot afford to buy one, your child may still be able to use one in the public library, at school during breaks and homework clubs or at Internet cafes. It just isn't quite as convenient or reliable - your child will have to compete with other users. Demand for computers at after school clubs can also be quite high with no guarantee of a place.