The Monroe calculator company appears to have made an early transition into electronic data processing and by the start of the 1960s the Monrobot computer line had reached mark XI.
The Monrobot XI does however appear to be the last of the line, it was a discrete component fully-transistorised machine with magnetic drum main memory. All of these technologies became obsolete in the early 1960s and it does not appear that Monroe made the transition to later technologies for small computers.
The Monrobot XI was a small business computer and surviving advertising materials clearly pitch it at businesses that could benefit from data processing but were too small to have a dedicated computer staff.
The machine itself was built to fit into a conventional office environment and operated without special power or air conditioning requirements. The input-output devices were IBM electric typewriters with appropriate modifications, other typical peripherals were paper tape reader/punches and magnetic cards. Magnetic tape drives were not available. These peripherals were generally familiar and non-threatening, allowing general office workers to easily begin to use a computer.
DoPECC has considerable nostalgia for the Monrobot XI, as it was one of the first machines that the author had the opportunity to handle and become deeply familiar with. Little material seems to remain about this machine and it appears that there is no surviving hardware.
DoPECC is keen to hear of any surviving Monrobot XI, please use the About/Contact link to pass on any information.
Images are from Donald Caselli's Monrobot photostream