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SuperMemo 20 - Super Memory Master Learning Tool Software
Activity Rules
1、Activity time:{{ info.groupon.start_at }} ~ {{ info.groupon.end_at }}。
1、Activity time:cease when sold out。
2、Validity period of the Group Buying:{{ info.groupon.expire_days * 24 }} hours。
3、Number of Group Buying:{{ info.groupon.need_count }}x。
Please Pay Attention
1、Teamwork process: Join/initiate a Group Buying and make a successful payment - Within the validity period, the number of team members meets the activity requirements - Group Buying succeeded!
2、If the number of participants cannot be met within the valid period, the group will fail, and the paid amount will be refunded in the original way.
3、The number of people required and the time of the event may vary among different products. Please pay attention to the rules of the event.
SuperMemo is a tool for rapid learning and long-lasting memory. SuperMemo helps you learn quickly and retain knowledge for years. Although SuperMemo operates similarly to flashcard programs, its functionality far exceeds other programs. SuperMemo uses the principle of spaced repetition to present knowledge at the appropriate time when the brain is ready to reinforce memory. Using SuperMemo daily can easily help you remember 95% of what you have learned.
3 Key Facts About SuperMemo
How SuperMemo Works

Official Website: https://supermemopedia.com/wiki/Main_Page
Download Center: https://supermemo.apsgo.cn
Alternate Download: N/A
Shipping Time: Orders are processed manually
Operating Platform: Windows
Interface Language: Only supports English interface display.
Update Instructions: Supports minor version updates, such as 20.x.
Trial Before Purchase: Free trial.
How to Receive the Product: After purchase, the activation information will be sent to the email address used for ordering. You can also view the corresponding product activation code in your personal center, under "My Orders".
Number of Devices: 2 devices.
Changing Computers: You will need to apply for a new activation code on the new computer.
Activation Guide: To be added.
Special Instructions: To be added.
References: https://supermemopedia.com/wiki/Trouble_activating_on_a_new_computer
Any question
In the design of priority queues, all elements - whether memorized, processed, or pending - are retained in the queue. This design is based on considerations of the learning stage, rather than simply determining whether an element is in the queue based on its state (such as whether it has been processed).
The reasons are as follows:
1. The dynamism of the learning stage
The priority queue is not just a simple sorting tool, it also reflects the dynamic changes in the learning process. Even if an element is marked as' processed ', its position in the queue will still dynamically adjust based on its priority. Therefore, the order in the queue is not fixed and unchanging.
2. Integrity of the queue
Technically speaking, the priority queue contains all elements, regardless of their current learning stage. This design is to ensure that users can have a comprehensive understanding of the learning progress, rather than simply excluding certain elements.
3. Avoid misunderstandings of "clutter"
It is not common for "processed" elements to cause queue clutter. The design of the queue ensures that even if there are a large number of "processed" elements, they will not all gather at the bottom of the queue. Therefore, users usually do not feel the impact of this "clutter".
Although it may seem unreasonable to keep "processed" elements in the priority queue intuitively, this design is aimed at better managing learning progress and priority. If you still have questions about this design, you can refer to the following videos, which provide more detailed explanations and demonstrations:
I hope this information can help you better understand the design logic of priority queues.