Suggest a display unit that could be used to give: (a) a permanent record of the output from a thermocouple; (b) a display which enables the oil pressure in a system to be observed; (c) a record to...

Suggest a display unit that could be used to give:

(a) a permanent record of the output from a thermocouple;

(b) a display which enables the oil pressure in a system to be observed;

(c) a record to be kept of the digital output from a microprocessor;

(d) the transient voltages resulting from monitoring of the loads on an aircraft during simulated wind turbulence.