On the right is the cheap store-bought cassette tape recorder that served as file storage. Keyboard keys were lettered with Letra-set, color-coded with nail polish and sealed with clear acrylic.

The case was varnished marine ply, and an old Black & White TV was used as the display unit.

I actually wrote a payroll program (in a mixture of Basic and Z80 Assembler languages) on this computer, that was used in a real-world business.