Abstract: This invention discloses a programmable game card comprising a basic rule board and one or more different types of game cards. The basic rule board comprises a basic rule mainboard and a plurality of basic rule sub-boards, wherein the plurality of basic rule sub-boards are detachably connected to the basic rule mainboard in a shape-matching manner, and each of the basic rule sub-boards records a rule of the game, and the one or more different types of game cards comprise event cards. The event card comprises a direct execution event card, a conditional execution event card, and/or a loop execution event card. This application can not only educate children on programming during the game but also embody the novel ideas of children during the game in the rules of the card.

Abstract: A mailbox comprises a box body with a door having a lock, a mailbox unlocking code input device for inputting an unlocking code to unlock the mailbox, a communication module for communicating with a remote management terminal, a storage at the mailbox or the remote management terminal for storing one or more preset mailbox unlocking codes, and a processor at the mailbox or the remote management terminal for identifying whether the input mailbox unlocking code matches the one or more preset mailbox unlocking codes, and issuing a mailbox unlocking instruction if matching. The processor comprises a mailbox unlocking code management circuit used to invalidate the matched mailbox unlocking code after the mailbox is unlocked, generate a new mailbox unlocking code when no valid mailbox unlocking code is currently available, and store the new mailbox unlocking code in the storage. The mailbox can safely, conveniently and automatically receive and/or send mail.

Abstract: A mailbox comprises a box body with a door having a lock, a mailbox unlocking code input device for inputting an unlocking code to unlock the mailbox, a communication module for communicating with a remote management terminal, a storage at the mailbox or the remote management terminal for storing one or more preset mailbox unlocking codes, and a processor at the mailbox or the remote management terminal for identifying whether the input mailbox unlocking code matches the one or more preset mailbox unlocking codes, and issuing a mailbox unlocking instruction if matching. The processor comprises a mailbox unlocking code management circuit used to invalidate the matched mailbox unlocking code after the mailbox is unlocked, generate a new mailbox unlocking code when no valid mailbox unlocking code is currently available, and store the new mailbox unlocking code in the storage. The mailbox can safely, conveniently and automatically receive and/or send mail.

Abstract: A mailbox comprises a box body with a door having a lock, a mailbox unlocking code input device for inputting an unlocking code to unlock the mailbox, a communication module for communicating with a remote management terminal, a storage at the mailbox or the remote management terminal for storing one or more preset mailbox unlocking codes, and a processor at the mailbox or the remote management terminal for identifying whether the input mailbox unlocking code matches the one or more preset mailbox unlocking codes, and issuing a mailbox unlocking instruction if matching. The processor comprises a mailbox unlocking code management circuit used to invalidate the matched mailbox unlocking code after the mailbox is unlocked, generate a new mailbox unlocking code when no valid mailbox unlocking code is currently available, and store the new mailbox unlocking code in the storage. The mailbox can safely, conveniently and automatically receive and/or send mail.

Abstract: A mailbox comprises a box body with a door having a lock, a mailbox unlocking code input device for inputting an unlocking code to unlock the mailbox, a communication module for communicating with a remote management terminal, a storage at the mailbox or the remote management terminal for storing one or more preset mailbox unlocking codes, and a processor at the mailbox or the remote management terminal for identifying whether the input mailbox unlocking code matches the one or more preset mailbox unlocking codes, and issuing a mailbox unlocking instruction if matching. The processor comprises a mailbox unlocking code management circuit used to invalidate the matched mailbox unlocking code after the mailbox is unlocked, generate a new mailbox unlocking code when no valid mailbox unlocking code is currently available, and store the new mailbox unlocking code in the storage. The mailbox can safely, conveniently and automatically receive and/or send mail.

Abstract: A mailbox comprises a box body with a door having a lock, a mailbox unlocking code input device for inputting an unlocking code to unlock the mailbox, a communication module for communicating with a remote management terminal, a storage module at the mailbox or the remote management terminal for storing one or more preset mailbox unlocking codes, and a processor at the mailbox or the remote management terminal for identifying whether the input mailbox unlocking code matches the one or more preset mailbox unlocking codes, and issuing a mailbox unlocking instruction if matching. The processor comprises a mailbox unlocking code management circuit used to invalidate the matched mailbox unlocking code after the mailbox is unlocked, generate a new mailbox unlocking code when no valid mailbox unlocking code is currently available, and store the new mailbox unlocking code in the storage. The mailbox can safely, conveniently and automatically receive and/or send mail.

Abstract: A mailbox comprises a box body with a door having a lock, a mailbox unlocking code input device for inputting an unlocking code to unlock the mailbox, a communication module for communicating with a remote management terminal, a storage at the mailbox or the remote management terminal for storing one or more preset mailbox unlocking codes, and a processor at the mailbox or the remote management terminal for identifying whether the input mailbox unlocking code matches the one or more preset mailbox unlocking codes, and issuing a mailbox unlocking instruction if matching. The processor comprises a mailbox unlocking code management circuit used to invalidate the matched mailbox unlocking code after the mailbox is unlocked, generate a new mailbox unlocking code when no valid mailbox unlocking code is currently available, and store the new mailbox unlocking code in the storage. The mailbox can safely, conveniently and automatically receive and/or send mail.