| roprocessors and Microcomputers,Physically, it | | | | sites, but are developing skills which will permit an |
| consisted of a silicon chip in a protective ceramic | | | | easy transition to access more complex information. |
| capsule, with a set of metal pins sticking out that | | | | It contained 2,300 transistors, executed 60,000 |
| connected it to other components in whatever | | | | operations per sec?ond, and could be used for any |
| device it controlled. It contained 2,300 transistors, | | | | deviceincluding computers and robotsthat |
| executed 60,000 operations per sec?ond, and could | | | | required a "brain" for accepting input and following a |
| be used for any deviceincluding computers and | | | | program of instructions to produce an output. Within |
| robotsthat required a "brain" for accepting input | | | | five years, many very powerful microprocessors had |
| and following a program of instructions to produce an | | | | appeared. The invention of microprocessors set the |
| output. Within five years, many very powerful | | | | stage for the arrival of the microcomputer, or |
| microprocessors had appeared. The invention of | | | | personal computer (PC)an affordable machine for |
| microprocessors set the stage for the arrival of the | | | | the masses. The first PCs, in kit form, appeared in |
| microcomputer, or personal computer (PC)an | | | | the mid-1970s,and by the mid-1980s machines such |
| affordable machine for the masses.( | | | | as the Apple Macintosh and those based on a PC |
| The first PCs, in kit form, appeared in the mid-1970s, | | | | first brought out by IBM in 1981 were pop?ular |
| and by the mid-1980s machines such as the Apple | | | | throughout the world. The success of these |
| Macintosh and those based on a PC first brought out | | | | machines led to an explosion of software, in |
| by IBM in 1981 were pop?ular throughout the world. | | | | parti?cular a range of spreadsheet, word-processing, |
| The success of these machines led to an explosion | | | | graphic, educational, and games programs. Since the |
| of software, in parti?cular a range of spreadsheet, | | | | 1980s, a number of strong-intertwined themes have |
| word-processing, graphic, educational, and games | | | | driven the computer revolution forward, inclu?ding a |
| programs. Since the 1980s,a number of | | | | continuing increase in the processing power and |
| strong-intertwined themes have driven the computer | | | | decrease in the size and cost of PCs; a ^witch of |
| revolution forward, inclu?ding a continuing increase in | | | | emphasis from isolated to linked machines, as |
| the processing power and decrease in the size and | | | | evidenced by the growth of local area net?works |
| cost of PCs; a ^witch of emphasis from isolated to | | | | and the Internet; and the spread of computer |
| linked machines, as evidenced by the growth of local | | | | applications into virtually every aspect of home tad |
| area net?works and the Internet; and the spread of | | | | business life ( |
| computer applications into virtually every aspect of | | | | Cyberspace for Kids,Giving a child a computer and a |
| home tad business life. | | | | powerful modem will enable him or her to access the |
| Physically, it consisted of a silicon chip in a protective | | | | valua?ble information that cyberspace has to offer |
| ceramic capsule, with a set of metal pins sticking out | | | | and thus zoom ahead of his/her peers. Or so parents |
| that connected it to other components in whatever | | | | have been persuaded to believe. But doubts are |
| device it controlled. | | | | creeping in. Expensive computing equipment that |
| The Internet isn't only accessible to teenagers. | | | | children were excited by for a while is often left to |
| Children as young as eight were looking excited at | | | | gather, dust. |
| Kids ahead. They tend to go for the more visual | | | | |