Expenditure on computer systems does not stop with the initial purchase of the hardware and software. Various computer supplies and consumables are needed to keep a computer system operating. These include:
- paper for printers, photocopiers and fax machines
- ink and toner for printers, photocopiers and fax machines
- lubrication oil for various machines with moving parts
- spare replacement parts for various items
- storage disks of various kinds, such as floppy disks, tapes and CDs
- cables of various kinds
- cleaning materials
- tools for maintenance purposes
