Kids don't typically carry microscopes around with them. They go to where the microscopes are when they need them because the function of a microscope is limited. Decision makers buying computers should take note. Purchase computing equipment that best suits the context in which it will be used, then make more critical decisions about connectivity and networking. Schools recognize that old computers can make an important contribution to education as long as we don't oversell their potential, or stop budgeting and planning for the implementation of new technology.
Many successful educators view older computers as single purpose appliances.
You can word process on just about any computer. Most Macs from the LC III and beyond can run many software applications. Numerous teachers use Apple IIs and old PCs as LEGO TC logo workstations. Kids can build, program and test engineering principles while connecting LEGO machines to these computers. More modern Control Lab materials work Microbased laboratory probes and data collection software are available for older computers as well.