“…[ 8,9 ] In the development of information storage, a variety of information storage carriers and methods have been explored and applied. [ 11–27 ] In the early times, punched cards as a common information storage means prevailed in various fields, such as census, business, etc., representing information by punching and non‐punching in pre‐known locations. [ 11–14 ] However, the high storage capacity always remains challenging for the storage methods based on paper carriers, limiting their application and development.…”
Section: Introductionmentioning
confidence: 99%
“…[ 11–14 ] However, the high storage capacity always remains challenging for the storage methods based on paper carriers, limiting their application and development. Subsequently, various new‐type information storage tools such as drum memory, [ 15,16 ] magnetic tape, [ 17,18 ] floppy disk, [ 19,20 ] optical disk, [ 21,22 ] hard disk drive, [ 23,24 ] etc., emerged due to technology development, which addressed this problem to a large degree. In the case of hard disk drives, a surge in storage capacity has been witnessed.…”
With the booming of information technology, considerable progress has been witnessed in information storage carriers, accompanied by soaring storage capacity. 3D codes as an emerging information storage carrier has attracted wide attention. However, it is challenging for conventional 3D codes to transform their encoded information, restricting their applications. Due to their rich color characteristics and various stimuli responsiveness, fluorescent materials can be utilized to construct stimuli-responsive 3D code systems that can exhibit pattern changes upon specific external stimuli, thereby realizing information transformation. According to the type of stimuli responsiveness, several kinds of stimuli-responsive 3D code systems are classified and summarized, including pH responsiveness, ion responsiveness, light responsiveness, electricity responsiveness, time responsiveness, some separate stimuli responsiveness, and multiple responsiveness. This review summarizes the recent 3D code systems, elaborates on how they can realize information transformation, analyzes their potential applications, and puts forward some perspectives on further development in this field. The authors anticipate this review can provide guidelines for the design of novel information materials and promote the development of information science and technology.
“…[ 8,9 ] In the development of information storage, a variety of information storage carriers and methods have been explored and applied. [ 11–27 ] In the early times, punched cards as a common information storage means prevailed in various fields, such as census, business, etc., representing information by punching and non‐punching in pre‐known locations. [ 11–14 ] However, the high storage capacity always remains challenging for the storage methods based on paper carriers, limiting their application and development.…”
Section: Introductionmentioning
confidence: 99%
“…[ 11–14 ] However, the high storage capacity always remains challenging for the storage methods based on paper carriers, limiting their application and development. Subsequently, various new‐type information storage tools such as drum memory, [ 15,16 ] magnetic tape, [ 17,18 ] floppy disk, [ 19,20 ] optical disk, [ 21,22 ] hard disk drive, [ 23,24 ] etc., emerged due to technology development, which addressed this problem to a large degree. In the case of hard disk drives, a surge in storage capacity has been witnessed.…”
With the booming of information technology, considerable progress has been witnessed in information storage carriers, accompanied by soaring storage capacity. 3D codes as an emerging information storage carrier has attracted wide attention. However, it is challenging for conventional 3D codes to transform their encoded information, restricting their applications. Due to their rich color characteristics and various stimuli responsiveness, fluorescent materials can be utilized to construct stimuli-responsive 3D code systems that can exhibit pattern changes upon specific external stimuli, thereby realizing information transformation. According to the type of stimuli responsiveness, several kinds of stimuli-responsive 3D code systems are classified and summarized, including pH responsiveness, ion responsiveness, light responsiveness, electricity responsiveness, time responsiveness, some separate stimuli responsiveness, and multiple responsiveness. This review summarizes the recent 3D code systems, elaborates on how they can realize information transformation, analyzes their potential applications, and puts forward some perspectives on further development in this field. The authors anticipate this review can provide guidelines for the design of novel information materials and promote the development of information science and technology.
A laboratory model magnetic drum translator, capable of serving as a one‐to‐one alternative to the card translator, has been built to study the problems arising from the prospective use of microsecond pulse apparatus in a telephone office environment. Electron tube amplifiers and germanium diode logic circuits supplement the drum information storage unit to provide the functional operations required. Results of preliminary laboratory tests indicate the feasibility of equipment of this kind for telephone switching control.
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