The memory record of the credit card reader is full. Please solve it first. What do you mean?

That means the card has been maxed out. Suggest a new card swiping machine.

1, the memory of each machine is limited. For example, the mobile phone and POS will store the credit card record information. Once it is full, it will prompt for settlement and clear the running water inside.

2. Method: Press the "Confirm" key and find "Settlement" in the menu (usually 5 keys). Print the running list yourself, and it will take a few minutes. You need to log in again when you are ready (operator 0 1 password 0000);

3. If you can't find "Settlement" according to the above, it will appear in "Management": pos swiping indicates that the storage is full, please settle first.

operating system

1, Windows POS machine

Most POS machines in the market adopt Windows embedded system based on Windows XP.

Advantages: the system is universal and convenient to use near the computer.

Disadvantages are: poor system stability, poor security and high development cost.

2. Android POS machine

Usually based on Android system, the application of POS machine is deeply optimized, which is the highest level system representing POS machine industry.

Advantages: high stability, no crash, no blue screen, low development difficulty, strong software compatibility and wide function expansion.

The disadvantage is that as an emerging system, the penetration rate needs to be improved.

3. Other systems.

Usually it is an embedded system developed by various manufacturers.

Advantages are: low cost.

Disadvantages are: poor system stability and compatibility.

The above contents refer to Baidu Encyclopedia -pos machine.