Voltage testing device and method for memory

A voltage testing device comprising:

• a signal producer, the signal producer comprises a sub-control unit and a signal producing unit;
• an oscillograph, the oscillograph comprises a control unit, an obtaining unit, a storing unit, and a voltage wave producing unit;
• and the oscillograph is configured to an input terminal and an output terminal of a memory;
• a computer, the computer comprises a control module, an adjusting module, and a display module;
• the control module is configured to send first initial setting parameters to the control unit and send second initial setting parameters to the sub-control unit;
• wherein the control unit is configured to store the first initial setting parameters in the storing unit;
• the obtaining unit is configured to obtain an initial voltage value of the input terminal and initial testing parameters of the output terminal when the signal producer sends an initial pulse signal to the input terminal;
• the control unit is further configured to send the initial testing parameters and the initial voltage value to the adjusting module;
• the adjusting module is configured to send a current voltage offset and a current voltage undulating value to the control unit, according to the initial testing parameters, and to send a current voltage value to the sub-control unit, according to the initial voltage value;
• the obtaining unit is further configured to obtain voltage values of the input terminal and the output terminal during a period time after the storing unit stores the current voltage offset and the current voltage undulating value and the signal producing unit sends a current pulse signal to the input terminal according to the current voltage value;
• the voltage wave producing unit is configured to produce two voltage waves corresponding to the input terminal and the output terminal, according to the voltage values, and to send the two voltage waves and the voltage values to the control module;
• and the control module is further configured to display the voltage values and the two voltage waves on the display module.